David Tonnessen/Pacific Coast News
On the heels of his split with Pia Toscano
, Mark Ballas
went clubbing at Hyde Lounge in L.A., and an onlooker says he was "having a great time." The Dancing with the Stars
pro was chatting with all his friends, telling jokes and cracking up everyone. Ballas stayed until closing time and "kept the party going as long as possible."