How does a person, usually a teenager, really feel about someone when their peers pressure them to reject that person (socially or romantically)?

Please feel free to comment on any aspect of these types of situations. But lets keep it real, and somewhat on topic.

This is a sub-set of bullying and peer-pressure topics.

I guess it starts in early childhood and lasts through the mid- to late-teens, and to a limited extent, even happens among adults.

Someone is friends with someone, but their peers pressure them to reject the person. I remember these types of situations from since I was in kindergarten or early elementary school, where it may seem trivial now but was a real trauma socially for those who endure it.

Later in school, a crowd, sometimes a crowd of bullies, pressures someone to not be friends with someone else.

In late childhood to the mid-teens, a person’s crowd urges or coerces or bullies them into not associate with someone who isn’t cool enough, or whom they want to hurt.

It even happens with adults. But by then, most of us get used to it who have endured it.

WHAT I REALLY WANT TO KNOW, is what goes on in a person’s mind who rejects the person they may like, or have liked, are pressured to reject. Do they still like the person but pretend not to? Are they actually persuaded not to? Are they brainwashed and really don’t?

I was jilted a few times in my pre- and early teens by girls I liked, and started to like me, who were pressured by their friends. But come to think of it, I see it quite a bit among children, high-school students, even church groups (young people mostly) and other social settings.