I was going to ask him if people were allowed to exchange phone numbers.

They exchanged phone numbers, and he called her two days later.

They exchanged numbers and went on to plan their day.

They exchanged numbers and talked four times on the phone, but never met again, he said.

We exchanged phone numbers and met the following week for coffee, but he was like a different person.

I just want to exchange phone numbers before we leave the game.

I enjoyed talking with the woman, we exchanged phone numbers and have since become friends.

At the end of the game, you exchange numbers, agree to play the following afternoon and go your separate ways.

"Maybe we should exchange phone numbers and addresses, if there's something here to write them down."

He took some photographs of her for his web site and they exchanged phone numbers.