I remember when I was 11 or 12 my sister was 4. I would watch both of my younger sisters at times. My parents were going through a divorce and I was left sometimes with my sisters. But the one who was about 4 I would take a bath with her and see if she would suck my boobs. This happened once or twice then I think I realized it was wrong. I also babysat a young baby boy sometimes I was around 12 and tried the same thing although I did not force anything nor did anything happen.
With my sister I would ask her to take a bath with me. It happened maybe twice and I feel horrible when I think I did that. I'd also dress her up sometimes and put make up on her. I was 11 so I don't feel I really know what I was doing.
I still feel horrible if it comes to mind. Any help is appreciated. Should I tell my sister this? We are close now. Am I an abuser?