movie where main characters ex is right about him being an ass

During their travel from Chicago to New York, Harry and Sally debate whether or not sex ruins a friendship between a man and a woman. Eleven years later, and they're still no closer to finding the answer.

Cal Weaver is living the American dream. He has a good job, a beautiful house, great children and a beautiful wife, named Emily. Cal's seemingly perfect life unravels, however, when he learns that Emily has been unfaithful and wants a divorce. Over 40 and suddenly single, Cal is adrift in the fickle world of dating. Enter, Jacob Palmer, a self-styled player who takes Cal under his wing and teaches him how to be a hit with the ladies.

When actress Sarah Marshall dumps aspiring musician Peter Bretter for rock star Aldous Snow, Peter's world comes crashing down. His best friend Brian suggests that Peter should get away from everything and to fly off to Hawaii to escape all his problems. After arriving in Hawaii and meeting the beautiful receptionist Rachel Jansen, Peter is shocked to see not only Aldous in Hawaii, but also Sarah.

Pushed to the breaking-up point after their latest 'why can't you do this one little thing for me?' argument, Brooke calls it quits with her boyfriend Gary. What follows is a hilarious series of remedies, war tactics, overtures and undermining tricks – all encouraged by the former couple's friends and confidantes …and the occasional total stranger! When neither ex is willing to move out of their shared apartment, the only solution is to continue living as hostile roommates until one of them reaches breaking point.

A woman who gets paid to break people up is forced to become a matchmaker when some new competition muscles her out of the break-up business. Now, in order to save her company (and keep her high-priced wardrobe) she'll have to rely on her old nemesis: love.

Mia, an aspiring actress, serves lattes to movie stars in between auditions and Sebastian, a jazz musician, scrapes by playing cocktail party gigs in dingy bars, but as success mounts they are faced with decisions that begin to fray the fragile fabric of their love affair, and the dreams they worked so hard to maintain in each other threaten to rip them apart.

In a post-La la land world, a man must decide whether he loves or he hates it