So my best friend and I have been inseparable, but I see her talking to other people and I get jealous. I know I DON'T have any feelings for her but I feel jealous of how happy they are with her and stuff. I don't know how I can stop it or how I could fix being so jealous.

Jealousy, like envy is a form of fear. About what? Probably not wanting to share her attention, or she being taken from you, or for a number of reasons.

Whatever the reason, think before you act or speak and don't ose your cool, and do something you will regret.

We all have those feelings, but we deal with them in cool, calm, and positive ways until they no longer are so intense, and worrisome.

You can admire, whatever but..

Jealousy is he worst. Competition & stuff.

I hate that emotion. One of the worst. I try & use it as a joke to myself, when it comes up. Then move on.
And give respect.

So what? Anyway?

Why are you jealous? Well, I have the same kind of thing going on as you, my best friend is so nice, a d this other girl was being with her so much I thing I'm jealous, but she's always been a good friend, and I know we'll always be friends, even though she makes new friends. I think the reason you're jealous is because you're afraid she won't be with you, but if those friemds of hers try to steal her from you, and she goes for it, you may need to think again about her. PokeXpert

You can't say that you don't have any feelings of emotion for her because jealousy is an emotion. Think about how you see her, maybe you want her as more than just a friend and you are in denial. However, whether you decide to pusue anything further, you will need to learn to control your jealous tendencies, or you will mess up every relationship you will be on the rest of your life.