Let me play out a little scenario for you,
You're a single guy with a guy and girl couple for roommates. You are very good friends with the guy. You live with them for a long enough period of time that you see and hear it all, both for yourself and from the both of them. The good, the bad and the ugly.
You are a smart, funny and not bad looking chap.
Doesn't take a rocket scientist to figure out what happens next.
The couple fights.
You are the shoulder to cry on for the both of them.
You are good friends with the guy, but also listen to the girl and her stories too.
The girl becomes jealous of your relationship with her guy. And she has come to like you. She makes a move, and you turn it down. She is humiliated and goes back to her guy and spins it.
Now you are the bad guy.
This actually happened to me, could it have happened to Adam?