VANESSA & NICK
Level of sweetness: A hand-written Valentine's Day card
Marking his second anniversary with wife Vanessa, Lachey even gave 16-month-old son Camden a sweet shout-out. "2 years ago today, i was blessed to marry @VanessaLachey on the beautiful Necker Island," he wrote in July. "Wow! Time flies when you're having.....KIDS! #Love."