How to tell someone their husband got me pregnant?

I was dating this guy for almost a year and a half & I knew he had kids. He lived with his baby momma & had told me they only lived together to coparent. He got me pregnant and became super distant so I broke things off. I was doing some serious Facebook stalking and saw that he was married to his baby momma.

That being said, I don’t know the ACTUAL status of their relationship. He offered me to meet his kids and mom so I believed the whole coparenting thing.. but now I’m not sure.

If they are married & she’s still in love with him... how can I break this to her? His two kids are the reason I haven’t yet.. but I can’t stop thinking about his wife.

Please help me. I don’t want her to be in this situation and I’m about to come at the father for child support and if they’re in a “happy relationship”... do I just give him the chance to tell her himself?