Mel Gibson's mistress claims she's not his mistress

Seen here on the set of Edge of Darkness with a soon-to-be-divorced Mel Gibson, Russian singer Oksana Kolesnikova denies she's his mistress despite widespread reports to the contrary. TMZ reports:

TMZ spoke with a rep for Oksana Kolesnikova, who gave us the following statement: "Sorry to hear about Mel Gibson's divorce. Somehow Oksana is being linked to Mr. Gibson, but there are no emotional ties between the two that I am aware of.
Oksana has in the past entertained Mr. Gibson with her piano music as he dined at the Polo Lounge at the Beverly Hills Hotel.
Yes, I definitely welcome the opportunity to set the record straight, our Oksana is not romantically involved with Mr. Gibson."

She "entertained Mr. Gibson with her piano music." Interesting. You know what's always a good thing to do after that? Take a pregnancy test.