I'm having an issue that's really making me question what kind of a person I am, where my values are and what I should do about the issue.

I have a girlfriend who I really care for and I enjoy being around her. She loves me a lot, although we have chosen to be celibate. We really are close in all other ways. She doesn't want to marry (and I don't blame her) because I'm not really good with money (having bipolar manic episodes, I've messed up a lot here). But, we are close enough that she would get jealous if I was out with someone else, even though we choose to remain at a distance from each other physically. I'd be jealous of her being out with someone else, too, but maybe for different reasons, idk exactly.

Recently I have been daydreaming of someone else, because this new person has been paying a lot of attention to me in ways that are very meaningful to me. And I'm not ready to suggest anything because I care for my girlfriend too much. But I don't want to be missing out on someone who may suit me better. However, I feel completely responsible to keep my girlfriend happy.

Can anyone help me here?