Acknowledging said "do" = strings.
Just act like nothing happened. If you really want him to pay attention, be slightly less interested in him than you were before the do was done. (Not saying it was you, per say, lol.)
If the do was done with the hopes of a repeat performance, then that is strings. If ya'll both agree to keep doing the do, and acting like nothing was going on, then that should be stated before clothes come off.
Sounds like the friend was hoping more would come from doing the do..
