@Erased ,
He's already let you know he's interested. He just doesn't know what to do about it.
Is there a gay/straight alliance or gay support group on campus where you could find a mentor to talk to about all of this?
The message in two weeks is a good idea.
In the meantime, you can figure out what happens next. You're interested. He's interested. Neither of you is out. Kind of hard for a relationship to develop under those circumstances.