guilty?

Kat • crazy ; wicked ; kinky
so, this guy ive had a crush on since 7th grade and i have been getting extremely close again.. and then something happened.
hes dating this girl of a year and a couple months, but we totally went way too far and i gave him a blowjob and he ate me out and yeah. (more than once)
but right after (what happened tonight, we didnt have sex) he told me he felt guilty, which i dont blame him, and we decided on sticking STRICTLY to friendship.
but the thing i feel guilty about is that i really.. dont want to stay friends, at all, actually. i want to continue to do this and i know hes serious about not doing anything anymore.
i guess its just my feelings catching up to me because i feel like he doesnt want me?
of course he doesnt, though, he has a girlfriend.
anyways, i just want some advice. 
should i stay friends? not friends at all? or try to keep messing around? or just some emotional advice since im sad :(