Why worry about it if it doesn't concern you? I think everyone on the board has one problem or another and this is no place to air dirty laundry like that.....even if you do KNOW something.
If you want to tell it so bad....possibly break up a home, possibly take a mother/daddy away from little children (if there is any), destroy lives and be that down right mean, then by all means CALL the couple in question. Better yet...have the nerve to face them in Wal-Mart or somewhere while they are together. Don't air it here!