My ex is going to college please help? PLEASE READ.?

soo my ex is leavin high sch next week and we still like eachother i THINK we're gonna keep in touch but how can i get back with him before he starts college in september because im scared he might meet a girl and i wont be there i'll still be in school, please help, this is ENGLAND college btw iknow america college is different soo yukno lol just someone give me some advise please? :)