In Love with a Criminal (Septiplier Story)

NOTE: This is my 3rd attempt at a Septiplier story so hopefully it goes well!

Jacksepticeye, or Sean McLoughlin, lives on his own in Ireland in his apartment, making videos for his rapidly growing channel. Every now and again, he'll do collabs with Mark, one of his YouTuber friends. Whenever they do, however, he can't help but feel as if he grows closer to him.
Markiplier, or Mark Fischbach, has done YouTube for a few years now. But there's a secret he's keeping from his friends: a very dark secret that could jeopardize their friendship.
Mark is a criminal. He's done things that he's been to jail for in the past. Usually you'd learn your lesson after getting out, but not for him. He won't stop, and now he can hide his tracks.
Can Sean break through to him, and maybe confess his feelings? Or will Mark kill him in the process?