Think about it. Do you really, truly want to be with him? If not, then it's not worth hurting your friend to be with Trenton if you guys are just going to break up after a few weeks.
Maybe it's not Trenton you like. Maybe it's just the attention he's giving you? That can be confusing sometimes, but seriously, if you look at it very closely, you'll see that you probably don't have those feelings for HIM specifically.