Just to start with a bit of background.
When i was younger i had a stepfather who abused my mum. I was about 5, he had an older son from a previous relationship who was about 10-11 i think. We would play this game where we would rub naked genitals. I thought it was funny and was a cool game. i didnt really understand it.
Anyways when i was 11 my younger brother of 6 came up to me, i was laying on my stomach he sat on my back and started rubing his genitals up and down. The second time this happened i started making sex noises. I cant remember whether i asked him to do it or not, I dont know why it happened or why i did what i did but now i feel awful, i feel like i abused him. My therapist says that when i was abused i shouldnt have known better but the older guy should have, now i remember this i feel like how can i class what happened to me as abuse when i partook in something similar. Please help me i dont know what to do, should i tell my boyfriend about it?? i dont want to tell my parents or my therapist as i have only met her once and shes a CBT thereapist not a councellor. I do suffer with extremem guilt over my past anyways and depression. Am i a bad person??