Co parenting guilt

Im 30 weeks pregnant and I’m planning to leave my partner. I’ve recently found out that has been cheating throughout my pregnancy.

I feel a sense of guilt knowing my child will be born into a coparenting environment however, I have fallen out of love with him after the betrayal.

After 7 years I have to do what’s best for me and as a first time parent it’s definitely daunting to know I’ll be doing this journey on my own.

Any advise of encouragement is welcome