Please excuse any incorrect ways of saying things I'm new to this and not sure where to turn.

My (ex)boyfriend has bipolar disorder. We have been dating for 2 months. I know he has not been taking his meds even tho he knows he needs to take them. I have not noticed are strange changes or behaviors in him until 2 weeks ago. He usually is loving and sweet and loves my kid and wants to adopt him if we get married. Well 2 weeks ago he suddenly got really distant. Didnt call or text which he used to call/text frequently. I thought something changed in his feelings. We talked and he said he still wanted to be with me and etc but was SOOO distant. This weekend after not seeing each other all week, he wanted to hang out with everyone but me. His dad is a truck driver and bf went on the road with him this past week so bf got very little sleep. I tried to talk to him about him not wanting to spend any alone time with me, he wouldnt listen and said I didn't want him to hang out with his friends. He would not listen to anything i was saying! He decided he couldnt handle it and broke up with me. A month ago we were talking about how I am basically his fiancee minus he doesn't have the money for a ring. We had decide on a time frame for getting married. We already have looked into what it would take for him to adopt my son. But he just threw away our relationship because I wanted to spend alone time with him??!! He has been so irritable. I have been reading about bipolar, and it sounds alot like a manic episode. Please help me understand him and what I can do to get him back??!!! HELP! I did not know what a manic episode looked like or I would have prolly seen it and things could have went better. How long does a manic episode last? Does one realize they made bad decisions even if they dont realize it was a manic episode? Will he later see he shouldn't have gave up? What can I do to help him and support him? Should I just wait it out and let him contact me when he is more stable? Should I try to contact him and talk about it?

I know no one knows me but I am really lost and need help! Now that I understand it was BP and not him I can handle the ups and downs that will come. I just hope I can get him back. Please help me!