Jake's wife had always been a passionate woman. She appreciated life and all the pleasures that came with it. That included sex with a variety of men.
When Jake met Kim, he knew she had a reputation of sleeping around. But, he didn't care. After they started dating regularly, he continued to hear rumors that she was still having sex with other guys. Again, Jake didn't care. Kim was an independent woman. That was one of the reasons he found her so attractive and sexy. While they never talked about it, he always felt confident that the other guys were just fantasies and Jake was the only man she truly loved.
Two years after their wedding, he was confronted with indisputable evidence that Kim wasn't keeping the promise she'd made at their wedding. He still clearly remembers that day. It was finals week at the college he worked at and Jake came home early that day, after taking a quick trip to the gym first.