in 2013 he said 13, yes.
14-15
if h is 18 then 16 or17
13 was from interviews a couple of years ago because at the time he would have been 15. He said 2 years younger so now that he's 18 the minimum is 16. However he might of changed his mind, but still highly unlikely he'd date someone 13 right now. If it was a 5 year difference and he was like 25, then maybe.