Octomom's New Boyfriend -- Secret Dating Show Past

Octomom's new boyfriend has proved he's willing to date ANYONE for a shot at fame ... because he whored himself out on a dating show right before he hooked up with Nadya Suleman -- and TMZ has the footage.

Frankie G -- who has been dating Octo for a couple of months now -- was a contestant earlier this year on a show called "Who Wants to Date a Comedian?"

During the show, Frankie shamelessly competes against two other guys for camera time to win the affections of a comediane named Marla Schultz. Frankie said he works as an EMT and does some "exotic dancing" on the side.

Marla ended up picking Frankie, but it clearly wasn't for his brains -- check out the video to watch him butcher the phrase "more cushion for the pushin'."