The 40 Year Old Virgin (2005)

At a high-school party, four friends find that losing their collective virginity isn't as easy as they had thought. But they still believe that they need to do so before college. To motivate themselves, they enter a pact to all "score" by their senior prom.

Best pals Jason and Daniel indulge in casual flings and revel in their carefree, unattached lives. After learning that the marriage of their friend Mikey is over, they gladly welcome him back into their circle. The three young men make a pact to have fun and avoid commitment. However, when all three find themselves involved in serious relationships, they must keep their romances secret from one another.

Veronica is a white-bread beauty searching for a good man in Los Angeles. While slam dancing at a Halloween rave, she meets Abel, a sensitive poet. Then she meets Zed, a supersexy tattooed drummer with incredible biceps. Who will she choose? Does she go for true love or cheap sex? She can't decide so she chooses both. But after managing to nurture a picture-perfect threesome, along comes Ernest, a rich movie director with deep baby blues that sweep Veronica off her feet. What's a girl to do now?

Jane Goodale has everything going for her. She's a producer on a popular daytime talk show, and is in a hot romance with the show's dashing executive producer Ray. But when the relationship goes terribly awry, Jane begins an extensive study of the male animal, including her womanizing roommate Eddie. Jane puts her studies and romantic misadventure to use as a pseudonymous sex columnist -- and becomes a sensation.

With varying degrees of success, recently divorced friends Dave, Vic and Donny are trying to move on with their lives. Vic feels vilified by his ex-wife's parents, while Donny has a shaky bond with his teen daughter, Emma. Dave, meanwhile, has an enviable problem -- he has more dates than he can handle. As they confront their post-marital challenges, the men take solace in one another's plights.

Can two serial cheaters get a second chance at love? After a one-night stand in college, New Yorkers Lainey and Jake meet by chance twelve years later and discover they each have the same problem: because of their monogamy-challenged ways, neither can maintain a relationship. Determined to stay friends despite their mutual attraction, they make a pact to keep it platonic, a deal that proves easier said than done.

Lu, a conformist woman in her forties, learns that her 15-year partner has been having extramarital affairs. Starting from scratch, she gets involved in an unexpected relationship with a young womanizer.

A guy has his life planned out until he is wooed, groomed and then dumped by an elusive woman.

Avery, a teenager with a tendency towards perfectionism, enlists her friend Larson to help her prepare for her first time with her long-distance boyfriend.

A young man meets and instantly falls in love with an engaged woman.