So to start off I'm a 22f my friend is 23m we met at a Waterpark when i was twelve, my birthday falls on spring break so we went there and I saw him in the wave pool and thought he looked cute and kindhearted (he was watching over and playing with his younger sister which as a teen is rare to see since most siblings bully eachother) and the girl I met there dared me to go talk to him. I decided to do it so I gave her my Goggles and dove in and swam up to him and tapped his leg, I popped up and apologized for touching him and we started talking and I ended up asking him to join me on rides etc (yes I had a crush on him a massive crush dont judge i was 12 and he looked like my favorite character shaggy) well he gave me his number and we had been friends since. He knew I had a crush on him for years (I'm vocal about my feelings and such). So here comes the issue he started to get a crush on me around 20 but I had a bf of 3 yrs so I turned him down. Well bf broke up with me after telling me he was doing drugs and we got back into contact, he is a very clueless male when it comes to relationship and sex( he never had it bc him and his family are hardcore Christians like I never until last year heard him cuss never drink never smoke no piercing yes ma'am no sir type of house) so I trusted him well knowing my past (in my eyes I see myself as tainted(saed) and therefore let my ex have me too) and thought he wouldn't want me for anything but friendship(he has said multiple times he sees me with platonic love) well when I went over to his house to visit he asked to cuddle(normal) but then he like started groping my chest and grinding against me I played it off and left but it's left me feeling so used and confused about our relationship and how he sees me.. I cut contact but he reached out to my sister asking if I was okay due to no response and now the feelings resurfaced and I don't know what to do or how to feel I start to choke just thinking about it. Can someone explain why he'd do that? How should I bring it up to him? If I should even talk to him again? Aitah if I don't bother and ghost him and tell my sister to block him?