To the moms & dads out there...

What would you say to your child if you found out the guy they’ve been seeing/sleeping with was 9-10 years older than them.? Your child is 16 at the time. The guy is 26-27

I always wanted someone to give me the right advice on how it wasn’t right but nobody ever did & eventually I started to think it was okay. Idk what else I wanted to hear idk even if someone tried to talk to me if I would have actually stopped.. I just don’t know but I wanna hear other people’s opinions.