You searched for: “anuptaphobia
anuptaphobia (s) (noun), anuptaphobias (pl)
1. An excessive anxiety of remaining unmarried or alone: Many people have anuptaphobias about remaining single because they view the world as being populated by couples.

Sometimes those who are anuptaphobias, or are unwedded, don't want to be considered socially different than most of the other people or they don't want to grow old and be alone.

2. Those who are suffering with anuptaphobias have a dread that people will consider them as being rejected by everyone and that no one wants anything to do with any of them.