Breezy snuck out the back door, while RiRi needed a police escort to wade through the sea of paparazzi waiting for her to exit the club.
One guest who was in the building tweeted, "Greystone Manor was crazy tonight.. Rihanna & Chris Brown together.. Singing reunited and it feels so good!!"
Did the former flames sing it up together on the mic? Wow!
If you need any more hints that the couple is getting back together, Breezy tweeted, "Can't stop lookin," right around the time he was in the club.
With Rihanna's light eyes, blonde hair and super sexy bodysuit, there was a lot to stare at.
The 23-year-old Battleship actress tweeted back, "What a crazy night?!!"
Last month, Rihanna laughed off rumors that she was getting back with her ex, but then why is she in the club with him?
It's not confirmed whether Karrueche Tran was in the building or not, but Chris's current girl tweeted pictures of her and her friends in a club.
Karrueche's friend Seiko tweeted, "Concealing what you're doing, or who you're doing it with due to lack of confidence or belief, is an indication of insincerity."
A pretty random thing to tweet when you're in the club.
You can watch the video of the former couple together - below.
Do you think Rihanna and Chris Brown will end up back together before the Grammys?
To make things even more drama-filled lets add Drake, another ex of Rihanna, to the mix! Drake was also seen leaving the same club as Rihanna and Chris.