You shouldn't cheat on anyone.
Carla is on a girls weekend out of town and meets George at a bar who buys her drinks and dances with her.
Carla wants to have a carefree weekend.
Carla thanks George for the drink and dances with him, but tells him she has a boyfriend.
Carla decides since it is a girls weekend she can do what she wants and takes George back to her hotel room that night.
Carla calls her boyfriend to check in and tells him about George, he is proud of her honesty and suggest they talk about taking their relationship to the next level.
Carla's friends find out what she did and tell her boyfriend who breaks up with her.