The Hangover (2009)
Rachael Harris: Melissa
Melissa : Why would you go to Las Vegas?
Stu Price : 'Cause my best friend was getting married, and that's what guys do.
Melissa : That's not what *you* do.
Stu Price : Really? Well, then why did I do it? Huh? 'Cause I did it! Riddle me that! Why'd I do it? You know, sometimes I think all you want me to do is what you want me to do. Well, I'm sick of doing what you want me to do all the time. I think, in a healthy relationship, sometimes a guy should be able to do what he wants to do.
Melissa : That is not how this works!
Stu Price : Oh, good! Because whatever this is ain't workin' for me!
Melissa : Oh, really? Since when?
Stu Price : Since you fucked that waiter on your cruise last June! BOOM!
Alan Garner : You told me it was a bartender.
Stu Price : Oh! You're right. I stand corrected. It was a bartender. You fucked a bartender.
Melissa : You're an idiot!
Stu Price : You're a - You...
Stu Price : You're... such a bad person! Like, all the way through to your core!