Celeb Couples Pack on the PDA

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Justin Timberlake and Jessica Biel
Todd Williamson/NBC/NBCU Photo Bank via Getty Images

When you're this in love, you just can't keep your hands off each other! Whether on vacation, strolling through town or walking red carpets, these celeb lovebirds aren't afraid to show the world a little PDA -- and we can't get enough of how sweet they are!