HELP What should I do 😢

[Littlemiss80]

I’m just looking for some advice and what you think about this, my partner who I have a baby with has lied to me none stop... he started renting his own property when I was pregnant going off all the time even though I was sick none stop throughout the pregnancy passing out all the time, but he was never around on certain days said he was going because he had a bad belly, then I passed out and tried contacted him and said he was asleep, (the same days every week)
He has two children with another woman and I have two children of my own which I kept asking him if we could get his children see them etc and he kept saying he wants it going through court etc etc I found out when I was in hospital after having my baby that he had sent his ex a photo of our baby 30 minutes after she was born.. and that he was going there alone to see his kids sitting in the house with his ex without telling me, him getting them all tea to have together, he went there when me and my daughter was still in hospital... then it all came out he was going there for months all through my pregnancy without telling me... now baby is 7 months old he is still going there alone.. He won’t show me his phone at all so secret he swore on the babies life he hadn’t spoke to her I went on his email which he’d left open on the laptop and there was messages saying how I tricked him into getting pregnant (which I didn’t) loads of photos of them all, him saying he’s not with me anymore and he doesn’t have anything to do with me, him and her has the cutest kids ever and he’s been giving her money thought she gets CSA off him and he has given her his house with all the contents and he spent all my money id saved for my baby for her pram etc.. he said he’d lost my kids Christmas presents last year someone had took them out his boot and all the pics are there off his kids opening them all, so he left my children without and give them to his children, I was pregnant on Christmas and I felt so down because my kids had nothing.. he doesn’t help me out at all.. but plays games with my head saying it’s what dads do for their kids and it was the only way of doing it her way or no way... he’s saying he’s playing her but he’s made me feel like this is normal, he goes there still to this day alone to get the children and won’t let me with him or even show me any messages they send each other.. he says I and our baby mean everything to him and puts on a sob story and makes me feel sorry for him and forgive him every time.. but every time he goes to get his girls I wonder all the time what is going on and it causes arguments.. what should I do? Please help.. I really love him and don’t like the thought of being a single mum again , like he says who would want a woman with 3 kids
:( xxx

He seems to be taking more from you than he's giving.