Fear of being in love.
X: "Man, have you seen what people do when they're in love? They do all sorts of stupid, embarrassing stuff usually for no reason what-so-ever. People who are scared of being in love are not strange at all, they're just sensible."
Y: Oh...Sure! They have Philophobia."
philophobia n (Greek philia, love + phobia, fear) - a persistent, abnormal, and irrational fear of love and intimacy, of deep relationship with smbd.
It seems Stalin suffered from philophobia. He never had a deep personal relationship with anybody, a man or a woman, either friendship or love.
(noun) A fear of being in love or falling in love. Usually because of past relationships or family issues.
Sally: I don't think we should hang out anymore.
Bobby: Why not?
Sally: I have philophobia.