Why do I feel jealous?

Anonymous
For context, I have a friend, let’s call her Hope. We aren’t extremely close but we get along I suppose, although my other friends don’t find her particularly nice to be around as she can be a bit much sometimes. Insulting, overreacting, being out of pocket… the usual. More over, her relationships and love life is very messy, she dates around, talks to a lot of guys, likes a lot of guys and claims that she is trying to “heal.”

I have another… friend? Let’s call him… Gabe. We aren’t close but we talk occasionally because of our circumstance of having to be in the same room once a day, everyday. To preface, I have no feelings for him, he’s younger than me and I don’t enjoy that concept in a relationship.

Recently, he and I- along with our table were in a group project. To which we had to finish up outside of the allotted time. We met up before class and we’re working on it at a table where Hope was already sitting with me. As he walked away, she whispered to me that he was cute. Which is understandable because he is quite attractive, that I can admit. I just laughed it off and said “don’t break his heart.”

Days past and Hope finally gets Gabe’s snap, and at first she said that he was too boring for her. But recently when she talks to him or talks about him, I get a feeling of what I can only describe is jealousy, but I feel nothing for Gabe. It’s confusing and I hate it. After getting somewhat rejected and trying to focus on myself, this emotion is not what I need.

Can someone help me? Or at least explain to me why I feel like this.
Why do I feel jealous?
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