It's very hard, especially when only one is BP. The other person doesn't understand why you act the way you do. You get mad at them for not understanding or being patient. Sometimes you hate them based on a delusional belief.

Sometimes you love them to death, are very happy together, and have a great time. And then, it crashes and burns all over again.

Sorry if it comes across as harsh, but I think the reality is 90% of marriages with one member being BP end in divorce. I hate to say it, but I see mine ending that way.