jealousy

A jealousy is when you feel uneasy or anxious because someone else is getting attention from the people you care about, especially if it's romantic interest. You might feel jealous if your partner talks to another person flirtatiously.

Think of it like this: Imagine you and a friend have been planning a surprise party for months, and suddenly the other person starts getting all the credit for coming up with the idea. You'd likely feel left out or unhappy that they're getting praised instead of you. This is similar to what happens when someone feels jealous. Maybe your partner got a lot of attention from friends at a party and now you're feeling like you're in competition with them. Or maybe someone at work is getting more praise for a project than you are, making you feel unhappy or uneasy. That's jealousy!