IIN people act like children when they get rejected?

Unfortunately, there are some people who never learned to handle being told "no" well, and yes, they often act like children and throw childlike tantrums when told "no". I grew up with a few people like this, myself, and IME, they were raised in families who never told them "no" or at least never followed through with it if they did. This resulted in spoiled and entitled adults.

Yes, rejection hurts and it sucks, but having a full blown meltdown doesn't make the situation any better. It's even worse when they try to insult you or otherwise insinuate that you weren't good enough for them in the first place (i.e. "33 is too old for me anyway!") That really seems spoiled brat-ish and only reaffirms the fact that the rejector dodged a bullet by rejecting the rejectee. 🤣