Have you said anything about how you're feeling, to either of them?
Unfortunately, sometimes people can be very selfish, or wrapped up in someone else. But not maliciously. They may have no idea the effect their actions are having on you. Before jumping the gun and doing something you might regret, I would suggest just talking to them about how you're feeling.
It's hard when you've been treated badly by people in the past. To not see that happening again. And I'm not saying it isn't. But I do know people can get tunnel vision sometimes and forget the rest of the world even exists. Which isn't your fault, or anything you've done. And may not even be something they're aware of.
The best thing you can do, Gwen, is communicate. Talk about how you're feeling.
I wish you the best. *big hug*