A lot of these girls are adopting the same personality, the one that's considered woke and fun on Twitter. They're trying to be a Cool Girl. Then they get hurt when they find out he's been seeing other girls, did more with other girls, or just moved on and they were only a fling. They had expected that their quirkiness and sexual gameness would capture his heart.
The only paradigm in their sphere that they have to understand what happened is: either you're a sex-positive bad boss bitch in control of your sexuality or you're a poor helpless victim. So if they're not feeling good about it anymore, it means they must be a victim.
In reality, they're just like your average woman (and probably most men too): they want an exclusive partner who makes them feel special and gives all of their romantic attention to them only. They just can't acknowledge it to themselves because being a normie straight is boring and gets you no LGBTQ+ clout. So instead of having a happy relationship and children, they end up with extra pronouns, validating retweet attention, and STDs.
The lesson: keep your kids off twitter, folks.