I'm very scared now

I am a good person and I didn't know all the information. I am 19 and pregnant by a 36 years old man who convinced me that he loves me but only now that I'm pregnant he tells me he is married and has a family and has no intention of leaving his family but the thing is I never knew he was married. Otherwise I never would have slept with him. He talked about us getting married but now he's told me this and is willing to pay to make me go away and never contact him again.

I'm embarrassed that I slept with a married man for 6 months and never knew he had a wife.

What do i do. Please help me.