Celebrity Celebrity Couples Benji Madden Commemorated Cameron Diaz's Birthday in the Sweetest Way By Jennifer Davis Jennifer Davis Twitter Jennifer Davis is a writer, editor, and content strategist living in Atlanta. She was previously the Associate Editor for InStyle, and is currently working as a Digital Content Manager at Cox Business. InStyle's editorial guidelines Updated on August 31, 2015 @ 12:30PM Pin Share Tweet Email Photo: Noel Vasquez/GC Images Cameron Diaz rang in her 43rd birthday over the weekend, and her husband Benji Madden took to Instagram to celebrate her in the sweetest way. The musician shared a selfie of the pair looking in love and he accompanied the snap with heart-melting caption. "Happy Birthday to my Beautiful Wife, My best friend and Everything else—there's so much I could write. I'm the luckiest guy alive—I get to spend the rest of my life right here. I love this Woman!! Many more Baby!!" he wrote. The couple married a little over seven months ago after a whirlwind courtship, and from this 'gram it's clear that they're still madly in love. Related Video: Recreate Cameron Diaz’s Beachy Waves from Our May Cover! Cameron Diaz and Benji Madden Arrive in Style at the Sydney Airport