Paris Hilton's Ex -- Face Full of Rebound Chick

Doug Reinhardt has figured out a way to deal with getting dumped by Paris Hilton ... a sweaty makeout session with some random chick.


Just days after announcing his split with Paris, a clearly heartbroken Doug swapped spit with a lady friend at the Night Vision/ All Points Oasis party at the Merv Griffin estate near the Coachella Music Festival on Saturday night.

Looks like Doug is picking up the pieces.