CHEATING PAIR

TURNS out Christina Applegate wasn't the only one in her marriage with a wandering eye. Applegate's soon to be ex, Jonathan Schaech, arrived at the opening of the new Las Vegas club Seamless After Hours on Saturday with his best friends Shannon Elizabeth and pro poker player Antonio Esfandiari, but quickly met his secret new girlfriend inside, sources say. Schaech and the petite blonde, named Maria, made out all night in the VIP section. Meanwhile, another bad boy, Mario Lopez, who cheated on his wife Ali Landry on their honeymoon, showed up with his latest squeeze, "Survivor" winner Danni Boatright.