On Wednesday, Benji Madden put his courtly manners on display during a shopping trip with Cameron Diaz [1] in LA. Benji was seen walking Cameron over to the passenger side of their car and sweetly opening the door for her. This was just the latest couple's outing where we've gotten a glimpse at Benji's chivalrous ways. In August, he sent a loving message to his wife [2] in honor of her 43rd birthday, and that same week, the pair was spotted holding hands [3] at LAX.