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Mac Gets a Boyfriend (who isn't Dennis) by Lilacnwaves
Fandoms: It's Always Sunny in Philadelphia
15 Oct 2025
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Dennis is in shock and denial when Mac has a new boyfriend (who maybe looks a bit like Ryan Reynolds). The Gang tries to help with poor results. Series wise: this is a standalone or replace 10pm with it if that's what you like. (Pretty much all of them can be read as standalone). Angsty and dramatic but I don't do much dead dove so don't worry.
Series
- Part 3 of The Adventures of Mac and Dennis
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Killing Time With You Is Killing Me by Haunted_Obsidian
Fandoms: It's Always Sunny in Philadelphia
22 Sep 2025
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Prompt - I just I need more manipulative Mac, giving Dennis supplements with certain effects or something or or convincing him of things kinky or otherwise making him feel cutely vulnerable Dennis NEEDS to be vulnerable more
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Prompt - Can you write something expanding on the episode where Mac poisons Dennis but Dennis secretly knows and is very proud of Mac for it. Something like the movie phantom thread. Where the poisoning fixes their relationship in a way.
to break Dennis ego and make him dependent on Mac , to which he not only recovers but comes to appreciate the vulnerability and care he provides
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You wish he’d stop staring— especially with those icy eyes. “Just— don’t be surprised if you get unwanted attention from the customers. A young, attractive girl like you, in a place like this, where people come to rid themselves of inhibitions?” He sucks his teeth. “Not a great combination.”
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You are the new dishwasher at Paddy’s Pub in Philly. The bartender, Dennis, seems to take a special interest in you.
As your innocent coworker relationship begins to twist into something less so, you find yourself falling deeper into Dennis’s sick, dark vision of love: control and obsession.
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Prompt - i love when you make Dennis sad and pathetic! What about pathetic dennis suffering from long covid even after getting back from Ireland -I just think it's such an interesting concept of dennis suddenly having to deal with debilitating symptoms and not being able to control it.
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Romeo and Juliet Are Idiots by Haunted_Obsidian
Fandoms: It's Always Sunny in Philadelphia
21 Apr 2025
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Prompt - what if when dennis finds out mac is poisoning him instead of confronting him, dennis just starts poisoning mac back and they keep escalating how much they are poisoning each other until it becomes a real problem (they’re poisoning each other bc it’s their love language)
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Dennis didn’t remember the last time he’d felt this bad. His body was hot with fever, his stomach churned violently, and the cramped space wasn’t helping at all. On top of all that, Mac had been acting weird toward him all day. Every time Dennis tried to start a conversation, Mac would give him a short, clipped answer and turn away like he had somewhere more important to be—which Dennis knew wasn’t true. But he couldn’t figure out why Mac was so distant all of a sudden... Hell, he couldn’t think about much of anything with this pounding headache.
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Dennis plans on making Mac his boyfriend. Things go wrong.
Title based off of the song by Mitski :-)
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tell me how good it feels to be needed by afterdark_red
Fandoms: It's Always Sunny in Philadelphia
01 Jan 2025
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They're ten feet deep into the haunted house when a giant plastic bat drops from the ceiling into their faces.
Mac startles (in a very manly fashion), but Dennis fully shrieks, and Mac feels hands wrap around his bicep. Looking to his side, Mac confirms that yeah, he’s not going crazy. Dennis Reynolds is latched onto his arm tight enough to bruise, eyes squeezed shut like he’s some helpless damsel.
Mac is— Fuck, so this is definitely turning him on.
Or: 5 times Dennis uncharacteristically clings to Mac + 1 time Mac characteristically clings to Dennis
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A trip to the hospital reveals Dennis' diagnosis; Mac doesn't leave his side.
Series
- Part 4 of Room 205
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Mac and Dennis spend their first Christmas together, though things don't exactly go as planned.
Series
- Part 3 of Room 205
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Dennis Turns Forty by onthecrosslook (jaggedlittleteacup)
Fandoms: It's Always Sunny in Philadelphia
23 Oct 2024
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Mac promises to show up for Dennis’s fortieth birthday. When he disappoints yet again, he and Dennis have a volatile argument that leads to both of them discovering uncomfortable truths.
Set before Mac comes out. Lots of religious imagery, disordered thinking, smutty weirdness, etc. Somewhat hopeful ending.Series
- Part 2 of Accidental Continuity
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Prompt - what about a highschool fic where mac & charlie are their normal selves, and dennis finds them and starts off with just buying weed from them. and he’s a little cagey because (here comes a personal headcanon 😞) mac & charlie are close physically too (platonically), like holding hands if they’re high just for the feel of it or sitting pressed side-to-side/arm-around-shoulder on some colder days (im imagining them under the outside field bleachers). just super casual close contact and it’s not long before dennis decides that he wants that too, and soon starts to stay to smoke with them. i imagine him just fully inserting himself/shoving his way into mac & charlie’s little dynamic and then that could fizzle into mac&/dennis physical touch too.
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Prompt - What about a fic where Dennis is in the hospital for a while for some reason and Mac literally never leaves his side? To the point that he makes friends with the hospital staff and they get Mac and Dennis their own private room so they can just be together? Mac helps Dennis eat and shower and alerts the hospital staff about when he's uncomfortable or needs more medication. The staff learn about how to handle the two of them and what their favorite foods, movies, etc are and Mac and Dennis both tell them thank you when Dennis is finally released.
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Prompt - Hiiiee could u write mac getting hurt physically and dennis helping him thru it and then mac getting emotional bcos his parents never helped him when he was hurt
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Prompt - Oh, what about a fic where Mac and Den are on their first vacation as a couple and Den starts to get sick but keeps pushing through it because he doesn't want to disappoint Mac. Only Mac is a smart cookie and knows Dennis isn't feeling well, so he subtly starts taking care of Dennis (making him drink more water, keeping blankets/tissues on standby, pretending he's tired so Dennis takes a nap, things like that). Dennis eventually caves and admits he may be feeling a little under the weather, which Mac admits he knows. Dennis is horrified, but Mac reassures him that everything is okay.
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Will You Still Love Me Tomorrow? (bonus chapter of When You Break) by Haunted_Obsidian
Fandoms: It's Always Sunny in Philadelphia
20 May 2024
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Prompt - Would you be able to write more about deaf!dennis and long covid?
This is a bonus chapter to my deaf Dennis verse When You Break. There are a few references in this one that might not make sense unless you've read that one first.
Series
- Part 4 of When You Break
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Prompt - Forgive me (and I don't know why) but I have this mental image of Dennis sobbing uncontrollably saying he doesn't feel good over and over again and Mac holding him close and running his fingers through his hair and kissing his forehead and telling him that everything will be okay.
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Dennis gets sick, and despite still being a total jerk, Mac can’t help but take pity on him.
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Stand By Me (bonus chapter for When You Break) by Haunted_Obsidian for maisiec33
Fandoms: It's Always Sunny in Philadelphia
30 Mar 2024
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Fic prompt - i love your deaf!Dennis fics so much, and I keep imagining a scenario where Den is so sick/hurt that he's too weak to lift his hands to sign. It makes an already miserable situation (being super sick) ten times worse because he can no longer communicate properly.
I'm a huge med whump fan so if there's a hospital stay and IVs make it even harder to sign as well.... I wouldn't complain.
(This fic is a bonus chapter for my fic When You Break. You don't necessarily have to read it as this was written to be a one shot but still a part of that verse.)
Series
- Part 2 of When You Break