My boyfriend is dating someone else. He knows I know. We've talked about it. They are both polyamorous, but I'm not. I've told him I would prefer if he didn't, but I've become used to it. I really just don't think about it. But when I do, it hurts a bit. He told me he wants to stop things with her, but doesn't want to hurt her and it's so hard for him to do. And I'm very understanding about it, but I'm afraid to tell him I want it to stop sooner rather than later.