I(20m) warned 4 of my friends about a female classmate and none of them believed me until they suffered the hurt and now, 2 of them are still okay with her, having adjusted to her, but the other 2 have almost cut her off. Thing is all of us are classmates and I interacted with the girl, Jenna(18f) during the first days and found her to not be my type of person, like I'd not even want to be friends with her, so I didn't talk to her again, being subtle so as to not hurt her young self. One month later, I was with these 3 guy friends that I'm still friends with and I told them about Jenna and my instincts firing off at her, they took it as a joke and told me "she isn't all that bad." Well, fast forward months later, 2 of them gave up talking to her because of her too nosy personality-asking them everything about their personal lives and details to talking in class and getting them punished. Then something else also seemed to have pissed them off as they distanced themselves from her. The last guy doesn't mind her but doesn't like her either. The fourth person I warned is a female friend(20f) and she said that she found Jenna pitiful and miserable because not many in class talk to her, and I said "Well, I didn't mean you to cut ties, just informing you of my instincts and others' experience. You're old enough for your own decisions." Now, that's the context. The AH part is when Jenna confronted me with a "You don't like me, do you?" I responded with a "Yes. I don't hate you, but I don't like you either." "Why?" "I just don't like you, that's all. My isntincts told me." "There has to be a reason." This conversation has happened more than once so I deadpan told her to stop pestering me and there's nothing wrong with her, it's me who's the one with a problem, just to get her off me. AITA for being direct and warning my friends of her just based of my instincts?