Needing some kind words

I just feel devastated tonight, my daughters father and I always had a great relationship but then after she was born he’s been nothing but horrible, he cheated on me, has said the cruelest things, left me over and over again, we’ve been living separately for a while now and he’s been seeing me and our daughter on his days off which was suppose to be yesterday, he was suppose to come at 2pm its now 7am the next day and I’ve slept just a couple of hours, he’s just completely ghosted me and won’t reply to anything, I’m so so hurt I’m just devastated, what did I do to deserve this? I try so hard to be the perfect partner and mother I’ve put so much effort into our relationship and sacrificed so much to try and keep his love but he just shits on me again and again 😢 how do I get over this? How do I stop hurting?