How do we tell my parents?

So...let me tell you may problem. They guy I'm talking to has a baby boy! He is not mine but at some point the guy I'm going to be dating and me are going to have to tell my parents. How do you guys suggest we tell my parents he has a baby? He's 100% respondable and takes great care of the baby, he works and has an excellent job. Besides he's 18. I really really like him and he's the first guy since my ex cheated on me I'm very interested in. Can you please help me?