I suspect that my partner may be bipolar

Last night, my boyfriend randomly broke up with me for seemingly no reason, except for the fact that he was overwhelmed with his life and he told me that if he knew what the reason was, he would tell me so that we could fix it. He just recently lost his job and it’s been taking a toll on him and he did admit that it is affecting our relationship because he feels like he cannot be a good bf to me with his current situation. He’s shown a lot of other signs of bipolar like impulsivity and high and risky behavior as well as depressive episodes. I do want to give him space, but does anyone have any advice on how to get through this? we both love each other very much and are very happy with the relationship, which is why I think last night’s break up was just so confusing. we also still have all of each others stuff, including keys, and he didn’t bother taking any of his stuff last night after i mentioned wanting my stuff and key back. he was on his knees telling me how wonderful i am, how much he loves me, and that im his forever family. he texted me later that night an hour after he left telling me that he loves me forever.