Jealousy is a sign of insecurity. You need to figure out why you feel jealous and deal with that issue.
Am I wrong for feeling jealous over friendship?
no.
Yes, jealousy is like worry, it accomplish nothing and both are useless on finding a solution.
yes and no. You need to relax and trust people, but at the same time its a common worry and totally normal, although you still need to relax and just trust your friends etc.
One day you will look back at it all and realize
people come in and out of your life to learn something,
and to teach something. It's all good.
Sit back and enjoy the show. It is a life of miricles
after all.