Well, Marten's not so drunk that he can't get up off the couch/teleport onto Faye's shoulder, but he's drunk enough to possibly ruin his relationship with one of his closest friends. That's a very specific level of drunk, and unfortunately Faye walked in at what was obviously the wrong time in hindsight. She's almost certainly right about Marten not remembering this tomorrow, but I worry about the other half of what she said.
It's basically set in stone that Faye is over Marten and is really, truly with Angus. The problem is, if her now-single roommate is going to sexually harass her when he gets drunk (and Marten will probably get drunk more often now that Dora's not giving him a reason not to) then it's going to be very uncomfortable living with him. And when you consider the reason she went home, cutting short the makeup session, was to check up on him, I imagine that she might be spending a lot more time over at Angus's.
We might actually see the location of the comic trend towards over there anyway. More of the cast is hanging out over there than any place other than coffee of doom.
Edit:
Also, re-reading the comic again, Marten is an even bigger dick than I realized the first time through. Him taking full credit for her recovery, when she's worked hard to go through therapy and take chances all on her own, and then bringing up Sven. I'm pretty sure bringing up Sven around Faye is an automatic penalty, even without the context he added in. Then, he calls her boyfriend a dick and throws out one of the douchiest, most pathetic come on lines I can think of.
I think bourbon, or any other alcohol in large quantities, should now be off limits. If Faye is willing to forgive him for what he's said, then she gets the right to keep it from happening again.