This is terrible. Anyone who says that this isn’t that bad is trying to make you feel better. I get it was 7 years ago and you should move on and clearly you aren’t a terrible person now but damn. That’s sexual harassment. You probably traumatized this kid and he will never forget this. Not to mention could have given him some body issues or other mental health problems. Your actions have consequences, taking accountability is the only thing you can really do. But yeah no that broke my heart I can’t believe people would treat their siblings this way at all.