While I'm a guy, I know that most of my gf's have had the same few complaints about me, so I'll share them.
First, I don't take anything seriously. I'll crack jokes when she's talking about state-of-the-relationship stuff. I'm too easy going about stuff that matters. It's almost like I don't care about things, even when she knows I do.
Second, on a related note, I'll just let things go. After we've had a fight, she'll want to talk about it and analyze it and figure out why we were fighting. I'll shrug and say that couples fight, and it was probably dumb, so why not just move on? Pretending things didn't happen doesn't make them go away.
Third, we'll be having a conversation, and besides the joking (which is really just an ego defense mechanism, she believes), she'll ask me why I feel the way I do, and I'll tell her, I just feel that way. Which is an entirely unacceptable answer, because you need reasons to feel. To which I'll then reply with something completely absurd and reductionist, like, "Why do you like men? Just because. Same deal."
Fourthy, I can't take a complement at all. God forbid she tries to tell me that I
am cute or I
can dance, over and over again. I just refuse to believe. And don't even talk to me about my eyes... they're beautiful and blue and every woman I know tells me they are, but I refuse to believe. It's very frustrating always having to boost my self-esteem.
Finally, and most importantly, I always draw into myself and need time alone, especially when things are bad, both personally and relationshiply (is that a word? It is now

). She wants me to let her in, to be... not dependant, but open. She'll wish that I could sit down and talk about what's wrong, and when I do I inevitably end up at "I don't really know what's wrong," and that's an unsatisfactory answer.
I'd just like to say, this is probably the weirdest thing I've ever posted on these boards, since the beginning.