Then, for the first time in all their acquaintance, they shook hands.

For the first time in our acquaintance he actually patted me.

This was the first time in all their long acquaintance that she had ever invited him into her apartment.

"A bit soon in our acquaintance for that, don't you think?"

On the final morning we shook hands, for the first time in our long acquaintance.

For the first time in our acquaintance I had caught him without a comeback.

But it seemed too early in their acquaintance for that, so he waited another minute.

For the first time in their brief acquaintance, she smiled.

We had got so far in our acquaintance as an exchange of names.

There is an element of challenge involved in his acquaintance.