Why do some people care about what others say about them?

[Katie]

It's not her not liking him that he doesn't like. It's the fact that she's spreading rumors that's not okay. He probably doesn't care what that one girl thinks, but he doesn't want other people's opinions (who he might care about) to change or for people to judge him based on what that girl is saying. I'm sure you would be very upset too. It can destroy your reputation and ruin chances of making new friends and possibly even being happy. Even if he deletes his facebook, she could still talk about him on there, and then he wouldn't even know what she was saying, which is worse in my opinion. I understand where he's coming from completely