He paniced and froze up. He wants you sexually, is kicking himself in the *** for letting you leave, but he is nervous about how to proceed. His inexperience is cute.
I suspect you can have this however you choose. **** buddy, relationship or marriage. Just lead the way.
I think you should talk to him about how you are feeling i think he has a good friendship with you and doesn't want to ruin that if things don't work out. the better thing to ask is what do you want
Don't **** him and see what happens, whether he stays or leaves