how do i convince my parents??

so my parents are caribbean so they are pretty strict. i haven’t been allowed to date until i turn 18 and i turn 18 next month. i am dating this guy though and he’s amazing. my mom did ask about him and i got so scared i thought she was gonna be mad but she wasn’t. and my dad idk we haven’t really had that talk yet. how do i let them know that i’m starting to date and they shouldn’t baby me anymore?