Cousin

When i was 15 my older cousin who’s a girl, invited me to do homework. but we were laying down on the floor doing homework. time goes by and i remember her turn and say she’s tired and i gave her a kick and said wake up. then she kicked me back and i started to turned , when i was turning she kicked me in my crotch. it hurt so i grabbed it and kinda grunted. she said she was sorry and started grabbing it and she was sorry. and squeezed it a little bit then gave it a kiss, then she went back to doing homework. i was really horny after. about 5 minutes later she said she was done grabbed her things and went to her room. we haven’t talked about it since or ever mentioned it. but it was a weird experience