In our age you might feel pressurised into thinking like this, if nothing else. I don't think there is anything wrong with you, apart from the attitude and it is a vicious cycle unfortunately.
I'm 22 and I've kissed many guys, but I've never been in a proper relationship. I have been head over heels with a couple of guys too, but those longings were never reciprocated, so I can understand where you're coming from.
I've been single for 3 years now and I'm single *by default*. But that's also because I've realised that I have really high expectations. There were many guys that I think I could have loved if I let love grow, but then I chickened out.
Do you have a sort of yearning for a relationship now, or is it just the peer pressure that, let's face it, is always there in the background? (Why else would you be thinking that you're in a strange position!) If the former, then maybe you could try going out with someone that you might not find the perfect date. Most relationships begin like that. Keep an open mind. Or if the second (like me) then busy yourself with the things you like doing but never ever think about being weird or anything. Chances are there's bound to be someone one day soon that you consider perfect all round.