just broke up with my sons father

Been together for 3years our son is 5months old and after a week of not talking he tells me he doesn't love me anymore I'm literally so heartbroken and I feel so lost and stupid. Heartbroken because his my first love, lost because I thought we were a family and we would be together for ever and stupid because we've been through so much together and I've done so much for him I even tatted his name on my arm and ring finger because we were going to get married or so I thought.
I'm currently in tears with snot running down my face lol I know lovely, I have one hand holding my sons hand whilst he sleeps because that comforts him and I'm writing this with other, I wish I could write a whole lot of stuff of how I feel to him but I know it's pointless and he won't read it and he won't reply so I'm writing on here just to take my mind off of it. His cheated on me, lied to me, treated me like a fool, but he passes it all on me. I am a fool for taking him back. I'm a fool for still wanting a baby with him, love seriously does make you blind, but all in all he never really loved me obviously. I'm hurt lost and alone and at the  moment it feels like this pain will never go away. But now I know I can't get back with him I need to stay strong for my son and my own dignity and self respect, there's plenty of other people out there who will appreciate all that I am and can give he was obviously not the one. Lesson learned..the hard way