The couple that crashed a White House state dinner - the Salahis - are breaking up.

And a Classic Rock star is in the middle of it.

Tareq Salahi filed for divorce Friday, a few days after learning that his wife, Real Housewives of D.C. star Michaele Salahi, left home to be with Journey guitarist Neal Schon.   Court documents show Tareq writing, "She continually exposes our friends and acquaintances to her adulterous relationship and has flaunted the same throughout the community, the nation and indeed the world, and thus caused...me to suffer great harm, humiliation and embarrassment."

Earlier in the week, Salahi contacted authorities and claimed his wife had been abducted.   ABC News reports, he didn't realize at the time that Michaele Salahi was with Schon, a fact that was confirmed by the Journey rep the next day.  She's been photographed by TMZ sitting backstage, right there by the sound stage.

Schon himself is a married man.  He married former Playboy Playmate Ava Fabian earlier this summer.

Cameras are everywhere, so time together is hard to hide.

No word yet on the status of Schon's marriage.  For now, Fabian tells TMZ she's "extremely hurt."