Need Opinions on this PLEASE

I'm 15, I'll be 16 in 3 months and my boyfriend *just* turned 18. He and I lied to his family because they would never approve of it considering I'm not 16 just yet. Yesterday they did the math and it didn't work out right, so they figured it out. Mom was frustrated and Dad was beyond pissed.

His Dad and him got into a PHYSICAL fight about it, and I've never even heard of Dad getting that angry. They were okay with it when they thought I was 16 because they liked me for the whole 3 months though. 🙄

My best friend is dating his younger brother. She's 16 and he's 14. Both turned their current ages already this year. she's of legal age. He is not. Dad wasn't even mad about that. I get it, shes not an adult yet, but he is NOT of legal age. *neither am I but I will be*

Basically what I need an opinion on is seeing if that's fair or not. I swing both ways as far as this goes because I see both points.

I think it has something to do with genders or whatever to their Dad, but I don't know.

He's worried I'm gonna get his son in trouble, but I wouldn't get an innocent person in trouble for something they didn't really do.

But now, I'm not allowed to break up with my boyfriend, not that I wanted to, but not the point, but I'm also not allowed to really do anything with him. Not allowed to cuddle with him, not allowed to rub his back for too long because to his dad it looks like I'm getting sexual? HOW IS A BACK RUB SEXUAL?? I DONT GET IT. Not even allowed to be alone with him for 5 minutes and its bugging the life out of me, considering he doesn't even have a phone so I can't really talk to him either. He borrows his uncles spare when he goes to work but gives it back when he gets home. I dont know. I'm just annoyed I guess.

serious opinion though?