I wouldn't classify him myself. But, if pressed probably (as Airen said) somewhere between kinky/open and bicurious.
Kayla had some good ideas for a guy who was curious about cock but didn't want to really have sex with an other man. Or maybe he does want to go all the way with an other man. I say, be who you are, and be happy with it. You can usually find someone to play with, no matter what you like to do.
Discovering your sexuality and opening your life and your mind is a fascinating thing!
But, please be careful and use safer sex.