I've been tortured by this over the last couple days.
A few months ago, I did this thing online where I sexually role-played as my sister, showing pictures of her (non nude or anything) to random guys, pretending to be her cybering and masturbating. This randomly came to my mind again and I can't get it off my mind, I'm just extremely ashamed of it and I don't have anyone I can tell who won't judge me or will help me. I feel like I think about my sister too sexually, I kinda always have. I haven't done it lately, though, I've come to my senses.
What can I do to alleviate this? I can't stand having it on my mind but I really shouldn't tell anyone.
Don't do it again.
Get a real social life and meet some women.
i had the same problem when i finally realized that my stepfather has had sex with my mom, the image of that made me so disgusted that i couldnt even look at anything sexual without wanting to throw up.
i think the best thing would be to avoid thinking about, swarm yourself with work, or just plain do whatever the hell you want as long as it pre-occupies you long enough to forget about it.