how do you guys cole w jealousy

idk im just getting jealous of my friends having other friends and its becoming a problem lol... like i was so used to being the only person they were both close to but now that college is happening its just slowly changing. i really dont want to be because im being less energetic and they know somethings wrong w me but i just dont want to say im petty. how do you guys cope/distract urselves??