Uninvited guests seldom meet a welcome.
Uninvited guests are often most welcome when they leave
Unbidden guests Are often welcomest when they are gone.
When I go to a party, nobody says hello. But when I leave, everybody says goodbye.
There is a definite loneliness in the game. Most people stay away from you since they think they're intruding upon your time. And after the ball game, when it's 11 o'clock and you want to eat dinner some place, the restaurants are closed.
Dining with a married couple can be uncomfortable.
You wouldn't want to move if you sat next to me on the bus. Or maybe you would.