I recently exchanged numbers with a girl who I sit near at football matches as we've become quite good friends. I've always liked her a lot more than friends and she has told me by text that she feels the same. The problem is that she is 15 (16 in december) and I am 20. Now I realise that 4 and a bit years isn't much of a difference in relationships but with her only being 15 I can't help thinking I'm doing something wrong just by liking her.

Your advice please?

Thanks.