Okay So My Sister Just Ended Her 2 (?) Year Long Situationship And I Thought Why Not Post About It Bc

Okay so my sister just ended her 2 (?) Year long situationship and I thought why not post about it bc the details are kinda intriguing and also the situation doesn't make sense I think??? Tw: horrible descriptions of the situation bc there only sm information my brain can retain.

Basically this is about a younger (!) Guy in her class bc they started out as friends I think but tn she went out for drinks with her friends and he was there bc it was a class thing, except they didn't talk for over a month previously bc she left him on delivered deliberately bc they had a fight (I completely forgot what it was about).

So this night was the first time in weeks they talk and he's mad at her for ghosting him and they start to get vulnerable (bc drinks.) Mind you throughout their friendship they had this weird thing where it seemed like he flirted with her but then went on to go on dates with other girls? I think that was the thing? (Actually Im terrible at recounting events bc they had multiple arguments if I'm not mistaken, she's had multiple tantrums over him, ranting to me while drunk whenever she would go out with her friends).

Anyways they talk about their feelings and he basically recounts when they met for the first time at a party in the first semester of their first year and how he chugged a bottle and he noticed she looked at him and he thought smth like: yeah we could have a thing.

And from her pov it was actually a: never have I ever done x thing. So she was like judging him. But then at one point throughout the first year she develops feelings and she even tells him this night that she liked him at one point.

At one point during this night he even tried to kiss her on the mouth and she retracts. She also tells him she's seeing some1 atm (she's talking to another guy so she tries to commit to one guy at a time).

And then their argument leads to this exchange that was smth like:

Her: just tell me you don't like me.

Him: fine, I don't like you.

And now she's pissed at him for agreeing, she's not sure why, but we both suspect it's bc either A. She wanted him to disagree and say he likes her so she could reject him and retain her ego ig?? Or B. She wanted him to disagree bc part of her still likes him?

And after letting it out she kept repeating "I hate him, I hate him, I hate him." And then it lead: "I don't feel anything for him." And then: "I'm gonna fuck the other guy." And now she's trying to finish writing her paper for school bc who got time for hoes when you have homework to do.