No Wonder I'm Single

I'm a twenty something woman, living in the UK. I have a job, I'm relatively good looking, I can cook and I like to think I have a good sense of humour... and yet - I'm single. Don't get me wrong - I love being single and having my freedom - but sometimes I'm amazed by the things I say and do both in day to day life and in my encounters with men.. and when I say amazed I don't mean in a good way.

I'm a twenty something guy, living in the USA. I am a medical student, I'm pretty attractive (although my friends often tell me there are other attractive men out there, apparently), I'm fun and have a great sense of humour, I can cook better than almost every girl I've met, and I have a decent fashion sense - for a guy. However, I'm single. I've been told this may have something to do with my lack of patience, a certain egocentric streak, my often acerbic humour, or a penchant for getting drunk at inappropriate times or to an inappropriate degree when the occasion is acceptable. Perhaps all of the above.