its okay, and from what youve said you had a genuine non-sexual relationship with this girl, and like djchris said, they are just numbers, but there are too many people with other intentions in mind that made those numbers mean something in a relationship, and people who are 10 years apart (or more) get married all the time, and theres no problem, its just that since she is young and naive then its not a good thing, if i were you id move on, but im sorry for you man