A friend who gets jealous of your other friends is asking you to shrink your world to fit theirs.

Closeness does not require exclusivity, though jealousy works hard to make it feel that way. It shows up as hurt feelings about a photo, a comment about how you never have time, a mood that lands after you mention someone else. None of that is a rule you agreed to, and every time you make yourself smaller to settle it, the acceptable size shrinks again.

Take the feeling seriously without accepting the demand. Say plainly that you want both, then keep making the other plans. A friendship that can only survive as the only one was already struggling.