When your brand-new wife files for divorce the day after the wedding, you know you've done something wrong. And no, it has nothing to do with performance in bed. Or maybe everything, since our hero Felix just can't keep from "performing" with other women than his precious Fabienne. One affair a couple of years ago nearly ruined his relationship with Fabienne. Now, another "old friend," the gorgeous, hot and newly available Johanna, seems to have materialized out of nowhere to lure poor Felix astray from his wedding vows – the day before the wedding. When Felix confesses everything to Fabienne, she understandably flips out. The wedding takes place. And come next morning, Fabienne asks him to move out. The only way Felix can save his marriage is by following the rules of that unwritten best-seller "Monogamy for Beginners," which begins with "Think twice before getting married."