I’m so lost how do i get through this?

Last night after awhile of fighting here lately my bf said he was done. We have a 18 month old and a 3 month old. He said that he doesn’t love himself so he can’t love me the way I deserve to be loved. I’m so shattered. All I wanted was him to care about me and try for me instead of always turning me down when anything physical or emotional comes In to play. I wanted him to try for me and our kids but he doesn’t want to. He says we are all better off without him. So he’s leaving me with our apartment that I can’t even afford alone rn cause I’m 12 weeks postpartum and I just went back to work a couple weeks ago and not full time right now. He’s leaving me with all the kid duties and all the utilities and he’s just taking off to go live with a friend. I’m so fucking broken. We have been together 3 years and I’m so freaking hurt and stressed. How am I going to go without him? He’s all I know now and how do I raise 2 under 2 alone and deal with all this? I’m so hurt and lost.