I have been this way since I hit puberty. When I was like 8 my sister used to dry hump me she was 15. She called it playing boyfriend girlfriend. She never let me kiss her or really touch her at all she would just rub against me till she was done. When I was 12 I went in her room and she was wearing no panties just a skirt and had her legs wide open and I remember staring she acted like she didn't notice but she was really horny I could tell because she was breathing hard and had her eyes twitching. When I hit puberty I started to masturbate to those memories and I even sniffed her and my moms panties. I am really ashamed of this and I'm 18 and my hormones have calmed down but I still think about her. What should I do? Tell someone? Idk.