PLEASE READ AND COMMENT. Friends with "romantic feelings for each other"

There's this guy I've been talking to and I've gotten to like him a lot but we can't have a relationship because my parents think he's too old. He's going to be a freshman in college and I'll be a sophomore in high school. So he told me he DOES NOT want a relationship right now. Not with me, not with anyone in the world. 😟 
He really likes to talk dirty with me (I do too) but I feel like we're missing something... We sext and I feel like maybe he doesn't respect me in the way that he needs to because when we aren't being naughty the conversation isn't filled with cute things we say to each other... How do I change this?