Alone people don't like hearing about together people.
I prefer riding the subway when it's crowded because then I can pretend the person next to me is with me. "Oh we're just having a silly argument is why we're not speaking right now," is what I'd say if anyone asks. No one ever asks.
"I like the idea of being alone. I like the idea of often being alone in all aspects of my life. I like to feel lonely. I like to need things."