So you definatly have sexual thoughts and feelings towards men....sex aint painfull either, well it wasnt for me, a tad uncomfortable when its first going in your ass bit once its in its great...anyway back to the point. If I was you Id go to a gay bar/club every once in a while whenever you feel comfortable and ready and just ease yourself into the whole thing and hopefully you will find someone who you enjoy kissing etc and then hopefully you will find yourself being comfortable with yourself and the whole situation.
It could mean you're not gay, hence why it felt weird. You could be trying to be something you're not.