My gut instinct tells me there are 2 sides to every story. Not everyone has the same libido and for us working gals in the sxx  profession I remember when I just started out. Some gents would want to go, then stop, then want to go.  

Of course I finally picked up on some of the distractions. "I want to taste you." at the height of the big "O" or it is "My Turn".........If was not until I told the gents, "Please listen to me, You can have multiple cups of coffee, I will give you a massage in between to let your mind rest and then build back up..... that most would let go and I would keep my word.

Yet, before I figured this out, my mouth and his Mr. Happy would become so numb that he either could not get off, became frustrated and on the other hand, I really did not want to experience the open mouth numbness myself.  Until I figured out what worked for me, I did not look forward to those encounters. Kelley

 
you want to share the whole story? Depending on the pill's effect on you, it could have been a lot of extra work she wasn't prepared for. OTOH, I imagine that sucking a flaccid penis for an hour would be just as much work