Gerard Butler is continuing his quest of taste testing every celebrity female, by snagging himself a Madonna!

Think they are bumping their greasy bits and pieces?

Gerard and Madonna have known each other since she was married to Guy Ritchie, but apparently they took their relationship to the next level at her Oscar after-party in Hollywood on Sunday night.

A witness told Hollywood Life:

“She was putting on the full-court press, totally charming him – and even challenged him to a dance-off!

They were grinding in the middle of the room, real close and then Demi Moore joined in.

It was hot! Gerard was loving the attention.”

Was Ashton Kutcher grinding with them?!

Madonna joins the ranks of Jennifer Aniston, Cameron Diaz — not to mention rumors of Jessica Simpson and Shanna Moakler.

Heck, even Lindsay Lohan has gotten in on the action!

source: The Butler Is Doing Everyone [dlisted]