I did something silly i think what can I do and can I get in trouble by the law?

I did something so silly today at school, I'm a female and I was feeling hot, and I push my body my top and bottom parts into this boys back and will into his backside and push my into his back and he was likeing it i think so so did i then he told me to stop so I did but the only trouble is before he told me he likes me and I told him i didnt wanted him but i did that too him what should I say to him and can he get me in trouble if so why can he get me in trouble i know its a silly question cause i know what i did but can't think of the word