Louis Tomlinson Hanging with Zayn Malik's Ex-Fiancee

Louis Tomlinson tossed bro code out the window by hitting the town with his old One Direction mate Zayn Malik's ex fiancee.

Louis and Perrie Edwards were spotted Wednesday night taking a car together after the Brit Awards. Perrie and Zayn broke things off in August -- about 5 months after he left the group.

Last night could've just been a convenient carpool sitch though, since Louis has been tight with actress Danielle Campbell lately.

Besides, even Paul McCartney and Yoko Ono see each other from time to time.

Look it up, 1Ders. It's relevant.