Why is it nasty though?

cos shes barely into puberty, her body will have only just started developing, and the fact i thought u was older than 15 and fuckin a 13 year old is sick.

but even at 15, it is wrong... u should be gettin with girls ur own age n possibly older.... id never go with a girl younger than me unless she was atleast 17/18, n thats only cos at that age for me they are mature enough and they body will have matured aswell

okkkkkkk she bein 13 its that bad she jus two years younger than him but her bein your cousin thats jus sick