VIDEO : Gwen Stefani Wishes Blake Shelton a Happy Birthday

Gwen Stefani and Blake Shelton have been officially dating for at least seven months now and it's clear that the couple are absolutely smitten with each other. 46-year-old Stefani took to Twitter and Instagram on Saturday to wish her beau a happy 40th birthday. She shared childhood photos of Shelton and tweeted, "Happy birthday to my favorite person I ever met." The two met while co-starring on the Voice and started dating once their divorces were final.