Well every man who is not a virgin, at least every heterosexual man, has lost it to a woman. So I wouldn't really say it is unlikely for a woman to take a mans virginity.
As far as what your lady friend says about maybe being a disappointment to a future girlfriend, I' would ignore it mostly. I mean let you future girlfriend know that you are a virgin. If the relationship has any meaning at all she will understand and be supportive, and if she is not understanding and supportive then she's not worth it.
Well my first time my g/f took control. I was nervous and really couldn't finish.
