Dear Thelma: Why is she rejecting me over and over again?

I’m in my late 20’s. I’m decent, observant and reserved. I’ve met quite a lot of admirers but all I do is reject them. Sometimes I feel bad for not being open to them. The reason is, I don’t want them to be fooled by my good side.

One day, I met this amazing lady. I never expected to fall in love with her. She’s not perfect – she’s skinny, a little nerdy, unfeminine, cowardly, a bad actor, and a bad liar. (I have no right to point out her flaws because I myself am a coward as well.)