I get turned on by my sister
I am a boy and i have been sharing a bath with my step sister since we were very young but now she is 15 and I am 14 and my My Mum has told us that we should bath apart now but we both agree its still okay and now we secretly bath together when my Mum is out. I think about her all the time and all i can think about is our next bath time and I want to ask if I can touch her. I have started touched her boobs when i wash her hair and I pretend its accidental and she is always cool with it although I'm sure she knows i'm doing it on purpose. I really really want to ask her to do sex stuff but not all the way sex, just kissing and touching and i am sure she'd agree. What should I do. PLEASE HELP.