I think I do too ... till now, I dated two guys seriously although when I first saw them and after dealing with them for a while, I could feel something is wrong, but I always doubt my feelings, so I give it a try ... I think I am afraid of being too critical or perfectionist as they describe Virgos all the time.
I wish I am wrong once anyway because till now there is always something uncomfortable with every guy I meet, I wonder when will it ever happen that I meet someone I am really comfortable with ...