My GF and I went through this tonight.
On the phone before we met, I made a joke, she said something to the effect of "Ummm, Okay."
Then we met, "we" talked for about an hour. Made another stupid joke, "ha ha, you're cute."
Then I "took care of business". Made a really light joke and she was laughing her ass off.
I would cite regulation, but I know you will simply ignore it.