How do past traumas and heartbreaks impact the decision to stay away from a twin flame?

You make it clear to a former you don't want the friendship to continue (due to genuine past things). Later, one of your other friends says "I hope they don't think bad of me since I was hanging out with you". What should your response be?
I don't like socializing with other people at all. My only solace in this life is pure abstraction, and a life divorced from human social life. Why is my approach a philosophically valiant one, in the face of the depression I feel?