a two year age gap is perfectly normal depending on what ages example: 20 22. 15 and 13 is a little weird but normal as long as the 15 year old is at most 1 grade ahead
girl its fine...I mean when I was 9 I was "dating" a 14 yo so I think 13 and 15 is fine as long as she is kind,respectful,and will do anything for ur happiness..and she cant be a liar