Relationship Advice?

emma • musician & mua
I'm a freshman in highschool. I make straight A's and have a GPA of 4.57. 
I date a senior. I really like him, and he's down for me. The only problem is the age difference. I'm 14 and he's 18. I understand that he's going to graduate and that the relationship won't last, but for right now, I love him. I can't tell my parents though. They'd kill me. It just really sucks because he's completely for me and texts back before I even send the text. He treats me better than anyone I've dated and I just wish we had better circumstances. I've already cried a lot because I know I'll lose him when he graduates. I'm just so torn at what to do.