It sounds like you’re very realistic about things. If you have a long distance relationship, at age 15, you have to understand that you won’t have the same bond as if you see each other more regularly in person, and that there are normal high school temptations and distractions on either end of the relationship that may cause miscommunication and disappointment. Also, when you do see each other, there may be pressure on the visits that you wouldn’t have if you were able to see each other more freely and more often. Long distance relationships are tough at any age. However…. you may still find that the long distance relationship creates a special bond that is valuable to both of you. My advice is to weigh this advice against what you know about yourself and this guy and decide what works best for you. Weigh possible regret over not trying over possible heartache over it not working — against the possibility that you may create something special that has no heartache.
I hope that helps.