There is no need to be ashamed. I think that's totally cool!
I perfer to marry a virgin but I also knew in this day and age that would be hard to come by and I thought my wife would be partly soiled, but, wow. As a guy, I must admit, I think it's awesome to know there are still pure girls around.
Go ahead and keep your standards high but keep them realistic. There is no perfect guy so don't waste your time looking for him. there are only real people with real problems. Just make sure the guy is walking with the lord. It will help in many ways.
As for loosening up around guys, well... kissing them might help! (heh, Kidding!) Just be yourself. I like girls who are themselves. What more can I say? (really, what more can I say? I just dont know. Sorry. heh)
Oh btw, I'm 25 and never been kissed either. I've never dated anyone as well let alone held a girls hand on a romantic level. maybe I am the freak?
Just be sure you can cook well and you will be ok.