Page Six says Donny was "making out with his new, blond girlfriend, Lisa Sandler, at Philippe." That would be Lisa Sandler, the former wife of hedge funder Andrew Sandler, the man who hired a private eye to tail his wife last year, and found out she was having an affair with Donny Deutsch. Apparently now they're an official couple. That smarts.
But honestly there are many better reasons to dislike Donny Deutsch.