AWKWARD visit

I have a friend, who's (or was) more than a friend, but less dan a gf... Now, she is involved with a dude, and  speaks of her being bisexual as a thing of the past. If she only chooses to date guys now, then, it is what it is, and we can still be friends, but I need her to let me know. I'm supposed to visit her, and a few other friends next month, and I want to avoid an awkward situation before it arises. Any advice?