Door Left Open for Mariah Carey Reconciliation (VIDEO)

Nick Cannon is not closing the book on his marriage to Mariah Carey. Yeah, surprised us, too.

Nick was leaving Baltaire in Brentwood Monday night when we asked him straight up if there was a chance they'd get back together.

Nick and Mariah have been on good terms since their split, hanging together with the kids as recently as Easter. But our sources have said their romantic relationship is ancient history.

So the question ... will history repeat itself?