"I have a couple of single friends who might be getting married soon," she said.

I was alone, isolated, without a single real friend in the world.

In all that great city, I had not a single friend.

Right now she doesn't have a single friend her own age.

My single male friends have noted similar changes in their lives.

No one, except a single friend, if that being could be found.

"I don't remember having a single close friend before the age of 25," he says.

But in all those years, I never made a single friend.

People would think she didn't have a single friend in the world, which wasn't true.