I can relate - I often feel as though I'm so unusual, I'll never find someone who gets me. I've been hung up on one serious relationship I had in the past that I was so sure would lead to marriage, I feel as though I'm still in love and will never find someone like that again.

I don't think there's ever a reason to give up looking. Maybe you could look at your list of criteria for a relationship, try to establish what you're looking for realistically. Of course we all have an ideal, perfect partner in mind, but what traits are most important to you? Honesty, shared interests, intellectual connection, similar intimate needs, etc.? What flaws can you put up with? Try to figure out the few characteristics you need most in a relationship, and what you can do without.

Then get out and meet people - several of my friends have found partners through dating sites like match, echemistry, and okcupid. I've met a lot of people through my hobbies - i.e. playing music at open mics - maybe you could take a class or join a group in line with your interests, karate, meditation.

It is tough to find someone who completely understands you, but I think a relationship with honest/open communication, basic shared values for the purpose of raising a family and shared lifestyles so you can live together is a good start. Perhaps you could try to find somebody who's differences complement you, so that you share the most important qualities but are able to learn from each other in other ways.