Just need to vent

So my baby daddy called things off around 3 weeks ago. He seemed okay with his decision and I kind of guessed maybe someone else but not 100% sure so I try not to worry about that and took his decision seriously even though I’m really sad he’s taking away our family. He has literally went off the deep end and hasn’t been eating and doing drugs. Like I’m in pieces but I’m getting up everyday trying for our daughter even though you would think I would be falling off the deep end in some way because he broke up with me. Not saying he can’t grieve in his own way but seriously why fall so far off the deep end over your own choices and it was over nothing literally? I’m just sad for our daughter because her father isn’t clean and that’s all I want is for him to be clean and try for her as well as himself. I grew up without my dad and it stole my childhood because it was a place my mom couldn’t take. I’m just going through a hard time with all this…