Is a breakdown unavoidable?

I feel like I’m going to crack again. We were already going through a tough time, but I thought life was looking up. Then I got involuntarily admitted to a psych ward and he decides to break up with me the day that I leave the hospital over a text message. and it was all about not wanting to do this, but feels like he doesn’t have the time or the place we relationship something about his grandma dying. Something about me deserving better and overall me deserving to have a better boyfriend at first I didn’t think it hurt that much but now I feel like I’m going to have another breakdown. I just love him so much, but I feel so depressed and angry at the same time.