I agree with Anita.  Yes you like to see people happy but are you?  Do you feel responsible to make him happy?  Do you love yourself enough to take care of your happiness first?

It does not sound like he is getting help (medication, therapy) to deal with his bipolar/depression.  He is putting the burden of his behavior on you.

Regardless if the disease is talking (the way he talks to and treats you poorly) or not, the bottom line is that you are living a life that tolerates behavior that makes you unhappy.

I have reconciled that for some people I can love from a distance.  I don’t have to be in their lives in order love them.

Mark