OP, I can completely understand you instinctively playing all this down, I think everyone would if they were put in your situation.
It’s a natural defence mechanism, to try to fool yourself and protect yourself from the hurt, shock and heartache; by trying to say it’s “fairly normal” and that “lots of other men do it”.
A proportion of men murder people and children and some men are pedophiles etc. Does that make that ok or normal? No, of course it doesn’t.
I’m so sorry but he’s lied and cheated and had sex with other women and prostitutes in your own home and your own bed. That is disgusting behaviour.
He will not change, it’s not been a one off. The deceit involved is off the chart!!
I understand you’re worried about being alone but lean on your family, friends and even people here, for support to get you through this.
It will be hard at first but you will get through this and meet another man, who is lovely and genuine.
Having a baby and being tied to this man will be very difficult but that’s your decision.
For what it’s worth, I definitely would give the child my own surname, after carrying the baby for 9 months and giving birth to the baby!!! I don’t think I’d put his name on their birth certificate.
Please try to think how you’d feel if this was happening to someone else. There is no justification in the world to excuse this despicable behaviour…. and that’s just the stuff he’s finally owned up to.
You deserve better, a million times better and you will find that.
Sending you love and strength xx