Depressed Boyfriend

I have been with my boyfriend for 5 years. I moved into his home in 2016. After a while we started to talk about kids and the possibility of marriage. We were on the same page with being ok with not being married and really wanting kids together. We ended struggling to get pregnant, had all test, IUIs and it just didn’t happen for us. 2018 rolls around and its like all hell is breaking loose. He has battled with depression his whole life and apparently has been fighting the battle alone. Over the last 6 months he has been so depressed that he decided to look into other options of work because he hated his job and the people he worked with. Which is fine, I was all about him doing something new career wise. He decided to go back to school for nursing. After 6 weeks of going to school decided that the school he is now going to is not fast enough. So he is going to start another school in two weeks.

Everything was fine while all of this was happening. And now it’s like all hell is breaking loose he is crying everyday. He broke up with me telling me he can’t give me what I deserve. Looking at his symptoms he is severely depressed and is dealing with self hate. One minute it’s I want you gone and the next is I don’t want you to leave. I don’t want to leave him in this state to deal with this disease alone.

Do I leave since he says he wants me out?

Do I stay because he wants me to stay?

Everyone keeps telling me to look out for me but I signed up to be his partner. Through good and bad. I just need advise.

Thank you