Even though I think it's disgusting the way Ralph seems to circle around 17 year old girls so he can leap onto them the moment they turn 18 when they're still young and easily mindfucked into selfdestructive relationships ( And this is the most generous interpretation, I wouldn't be suprised if it was worse and he's a full-blown pedo only held back by the illegality of it ).
The thing that really bothers me is how he's openly treating her like a chicken wing, sucking on the bone for every scrap of meat, and going so far as to dig into the marrow. The enviroment he's putting her in, her obvious juvenile mental state, and literally humiliating her to her family by bragging about how he's fucking her on twitter is some sick shit. Nothing in his actions shows he cares about her well-being or has any interest in developing this into a "healthy" long-term relationship. She's going to end up used up, humiliated and with no prospects when this is over and Ralph knows this but doesn't care.
She's a dumb bitch for letting Ralph and his fans talk about her like she's a cheap slut so they can humiliate her dad, though. If this relationship doesn't end in a few weeks it's going to get really ugly by the end of it.