Okay ladies I need some advice! I have a friend (a guy friend) who is extremely clingy! Told me he…

Okay ladies I need some advice! I have a friend (a guy friend) who is extremely clingy! Told me he gave me his heart and that I'm being a bad friend ect. He and I were on good terms before he had a manic break (he's bi polar) now he's just constantly trying to control me, control my relationships, telling me I have to let him be at the ultrasound and birth and he's the godfather ect. If I say no then he gets all worked up about it. I refuse to see him alone without my bf or wife or have him at the house. He messaged my bf talking mad shit and is just almost too much to handle. I tell him all the time you aren't my daddy or my husband so back up. He gets angry I don't come visit or hang out. I'm almost eight months pregnant and I'm needed at home with my family. I keep up with him but he's homeless and I can't just go meet up ( I have no car). He almost gets to the point of harassing. I want to be a good friend but I think he's asking way too much. What would yall do??