Dating rule #2 is think with your head as well as your heart. When in doubt, go with your heart (but never abandon the head completely).

I was attracted to this girl. She said she was attracted to me too. I was wary, however, because she seemed to be a serial dater. Over time, we talked. I began to trust her. She promised (twice!) not to share a confidence, but no sooner had I told her a secret than she told it to someone else. I was embarrassed and felt very foolish.