Relationship advise

I really like this guy and honestly he is so sweet and caring and has manners. He’s amazing and I can see us together for the rest of our lives and that’s what we both want. I know I’m young but when I look at relationships I look for someone who we be committed to me and my baby and that’s what he wants. The only question I have is how do I talk to my parents about going out on a date with him. He is 19 and I’m 15.