I feel like it's all my fault...

My stepbrother would feel me up and finger me in front of my mom and stepfather and they never noticed anything. I was so depressed and I didn't give a shit about anything which is why I felt like I deserved to have that happen to me. Why I didn't try to stop him at first? I wasn't exactly in the best mental state I suppose. When I finally snapped out of it, he kept trying to do stuff and I would ignore him and avoid him. I didn't want it. I never wanted it. I should've said something sooner. I should've been stronger to say no instead of letting it happen. I never really said yes either, I just said "fuck it I'm worthless anyways". Is it my fault? Was it wrong for me to come out about it? It won't even be on his record and he only has a year of probation. I scoff at the line "no unsupervised contact with children other than his son", because that never stopped him before. Maybe I should've never said anything. My whole family sees it as a mutual thing that we both ended together. I guess what I'm trying to ask is, was I in the wrong? I don't know anymore and the more I dwell on it the more I see it as my damn fault for allowing it to happen while I was in such an awful state of mind and I should've never said anything