Thanks for great replies.

InTheProcess - she's definitely not jealous because of me. I behave very tactful - I doubt she even care enough about me to be jealous. She seems to be jealous of other males she has good relations with. I've tried to bring up topic on few occasions but with no luck.

One thing which can be added is that she's always "too nice" for almost any male person she meets or know. For her most of the guys around are handsome, cool and so on - even though many of them are not even about the average. I would say she's flirty with other men. Knowing her past it looks to me she won attention of many of them being sexually "ready" - which of course most of the men like.At the same time she didn't (at least in the past) develop friendship with females.

So perhaps she strikes to be female nr 1 around - but I wouldn't call her alpha-female - she's rather of fragile nature. It looks to me she attacks other women because of her insecurities. But of course it just my hypothesis.

I really try to understand her as a person - not only in this case - because there are several issues in our relationship which I would like to solve. So I've got this feeling that this and other "issues" are somehow interconnected.