Totally understand the games...iknow people that play them for hours, get totally involved, i know you can meet people like this, but

have you actually met this woman? Spent physical time with her, not just virtual roleplaying time with her?

The person/character online, could be very different than the real thing.
And also, you seem to already know this, but the more jealous you act, the more insecure you seem, which is not attractive to a woman.

I'm going to guess that the character you played was not jealous or insecure, which is why she found you attractive in the first place, and the types of people she is seeking to role play with. Play is the operative word. This is still a game, and I think to have a better relationship with someone, there needs to be some flesh and blood involved as well as the mind.

Good luck!