I Actually Wrote Something For His Birthday - Tumblr Posts
Man, there's so much that I want! But most of all, I wanna hear you say "Happy birthday." C'mon, I'm waitin'. Whenever you're ready. -Mammon's birthday notification

Context: Mammon and Mc are in Mc's room watching a movie Mammon picked, while he lays his head in their lap while on their bed
Mc:"Hey Mammon..."
Mammon:"Yeah?" He says while looking up towards Mc's face
Mc: leans down close to his head with a soft smile on their face "Happy Birthday" then kisses Mammon on his forehead
Mammon: silent for a moment but afterwards gently guides Mc so he can cuddle and be the big spoon
Mammon: "y-yeah yeah, just watch the movie."
...
Mammon: "thanks"
Mammon then holds Mc even closer, kisses their shoulder, and the pair continue to watch the movie till they fall asleep.
Happy semi-late B-day Mams🎉
Credit to @sister-lucifer for divider