Sister took pity on me
My sister has a habit of not getting dressed until she goes out or has a friend visiting. This means she wears PJ's round the house a lot. She does not wear a bra, and so I can see her nipples through the tops, and the tops are often short so I can see her little tummy, and if she bends over I can see a lot of cleavage, sometimes even her full b****. Her pj shorts are short and pretty tight, so I see a lot of her legs and her butt and you can sometimes make out her mound, seriously.
Anyway this causes and embarrassing problem, I keep getting boners, a lot of boners. I have started sneaking off to j*** off in the hope my b**** will go down, but this basically means I'm jerking off over my sister which seems wrong.
It seems though, not only had she noticed my boners but also my sneaking off to rub one out. It was just me and her in the living room and she asked my I kept getting hard when I saw her. I tried to explain that it wasn't her specifically it was her body, and having explained, I think she realised how much was on show and weirdly apologised. Then she asked if I wanted her to wear more, and awkwardly I paused, and with a knowing look, she said "you don't want me to, do you?" I didn't answer. Then she said she didn't mind my erections as long as I didn't get Pervy. I looked at her and said "ok" and she said "ok" back. I said I needed to go upstairs and for up. She said if I was going to j*** off she would lend a hand just once. We went in to the bathroom and she pulled my c*** out and started jerking it off, I was in shock but turned on. As she jerked me, I was trying to look down her top, she notices and moved her body so I could see better. I grabbed her ass and gave it a good feel, then I shot my load in to the sink. As I cleaned up she said "that was a one time thing, and never ever touch my ass again, understood?" I nodded and she left.
So confused, anyone know why she did that for me? And was it as bad as i think it is?