How to tell my boyfriend I have been have affair with a old boyfriend?

I am a female that is needing some help on how to tell my boyfreind that I am in LOVE with another man an my dau. is from my last boyfriend! But when we got back together I did not think we was going to make it back together from what he did to me in the past..........

well I would say to sit down with him have a chat about everything then tell him its the only way you can its trustworthy you really want hope I helped you in anyway

you should just tell him and insted of the guys wining the girls back it might have to be the other way around