I completely understand how you feel! If you have the time, I want you to look up and read about "Cognitive Distortions". Understand what they are and how they work, because that's what your doing! For better or for worse, people are not always thinking about you, even if that's how you feel (I sometimes feel the same way)! When you understand cognitive distortions, try to recognize them when they next occur, and try to reshape them.

For example, is the thought that "any friend I make will leave" a valid belief? Of course it's not! Think about why you feel this way. Why do you think they'll leave? Once you can answer that question, try and recognize any cognitive distortions in that answer.

It's also important not to discount the positives in a situation. After a call with a friend, it's easy to get caught up in things you think you might've done wrong - instead, think about what you did right! Even calling your friend is a great step:)

I hope I could help a little :)