Mate honestly when you're mates take the piss outta ya for not being with a girl its them trying to stop themselves being ripped on.
I know a few of my mates who still havent had a girlfriend/ had alot of experience, but the fact is, its not the biggest thing in the world trust me, girls arent everything, they get annoying at times and even though it seems like you really want to.
It will happen when its meant 2 happen, just remember if these people are meant to be your friends they SHUD respect you and you just tell em straight off, stop taking the piss cos its annoying me and I just wudnt want U as mates otherwise
Just remember have fun in life, there are other things to keep you happy... I volenteer at a Autistic home where my cousins go and play with them, its great fun and I get so much satisfaction, find summat you can do that makes you feel happy.