Have you had counselling or anything like that? Sounds like you could do with some help to process all of this and then decide what's best for you.
I’m sorry you went through this. What an awful thing to do to someone. I resented my husband after having my first because his life just seemed to go on as usual and mine completely changed. I spoke to him about it and he started doing more around the house and doing more with baby. We’re now on baby no.2 who is 6 months and I don’t resent him at all. He still does things that annoy me but that’s just relationships. If I was you though I’d have a think about what you really want and I wouldn’t stay with someone just because I didn’t think I could be a single mother and I certainly wouldn’t stay with someone just because I wanted another child. You can certainly be a single mother if you want out of a relationship, you’d be surprised at how strong you are when you have to be. Good luck with what ever you decide
Don’t ever say you wouldn’t be able to be a single mum, you certainly can! You need to go with what your hearts telling you xx