My Girlfriend is an Open Book

In order to free himself up to enjoy his upcoming beach vacation and partake in the many attractive ladies there, a boyfriend convinces his shy girlfriend to open up the relationship. A decision that could not have any repercussions. He quickly learns the decision has repercussions. During a dinner date, his girlfriend describes what she did during his week away. She met new friends while out on a run. However, lovers would be a more accurate term. She participated in a dance contest at a crowded bar. But really, there was less dancing and more taking off clothes while being recorded. She made connections with her boyfriend's friends and co-workers. You probably already guessed what is implied by 'connections.' Her stories only get more intriguing (or alarming from the boyfriend's perspective). Having never gone beyond kissing with his girlfriend, he discovers that not only will he not ever be her first, at this rate he won't be her hundred and first. What happened to his innocent, reserved girlfriend? Was it too much to ask that he be able to kiss some girls on vacation while his girlfriend waited for him to return and not screw an entire soccer team of men? FYI, she screws an entire soccer team.