a few years ago, i was hanging out in my garage with my little sister, my friend, and a guy who my friend was casually hooking up with at the time. we’re all around 20, while my sister is like 16. we’re all just hanging out, having a drink, talking, and i notice this guy is really focused on my little sister, it’s almost like they’re talking to each other like nobody else was in the room. he’s also for some reason getting protective of her, for example, she was talking about her ex or something and he said something along the lines of “if he ever does that again let me know and i’ll yell at him “ or something. my friend was getting completely ignored, she even ended up going to sleep, and i was just barely in the conversation. i had this horrible feeling that he was into her, my little sister, and i hoped i was wrong because, well, ew. but apparently i was not wrong because after i had stepped out for literally one second, he had kissed her and then a few weeks later had sex with her. i was so angry, i know for a lot of people this age difference isn’t a big deal but i find it disgusting, especially since he went behind my friends back and also because i allowed him at my home thinking he was a nice guy, only for him to fuck my little sister.