So should I break up with my boyfriend if I've been feeling pretty depressed these past few months And I've been wanting to unalive myself But I asked him if I actually do it Would he marry someone else and he said you know what would be funny is if I just replaced you with your sister, haha Should I break up with him?

Yeah, you should throw his stuff out the window like yesterday

I think it depends on what kind of context did he say it. Maybe it was just a pure simple humor, although a person shouldn't joke with someone who is in depression.

That's some pretty dark humor there, but Does he make your depression worse or does he bring you peace? But if he doesn't bring you peace, well, you got your answer.