If a woman I'm dating has a Will and Grace gay friend?

Then why does she have a problem with my friend? She's like the gay guy is to the woman I am friends with. I don't see why I can't have a friend of the opposite that is just a Platonic friend. I mean, she's a so what's the problem? Every woman I go out with has either one or several gay male friends that they go out and hang out with. Why can't I have my friend whom I hang out with and it doesn't mean anything? Why the double standard here?