Jimmy Kimmel Exposes His 'Bromance' With Ben Affle...

Jimmy Kimmel steals Matt Damon's man OMG

If you haven't heard yet, Jimmy Kimmel is having relations with Ben Affleck.

The faux feud between Kimmel and Matt Damon -- which includes the late-night host announcing he's had to bump Damon from the show every night -- escalated this month when Kimmel's girlfriend Sarah Silverman and Damon debuted their riotous video (and Internet sensation) "I'm f---ing Matt Damon."

So for his post-Oscars bash, Kimmel fired back with an opus of his own: "I'm f---ing Ben Affleck."

The epic clip includes cameos from Brad Pitt (as a deliveryman), Harrison Ford (blowing Kimmel and Affleck a kiss) as well as Cameron Diaz, Huey Lewis, Robin Williams and Don Cheadle (performing in We Are The World-style).

Even Josh Groban turns up belting out the Ben Affleck love lyrics.