Gwen Stefani can’t get enough of her man, posting a series of heartfelt tributes to husband Blake Shelton on Father’s Day. The singer shared a video of Blake playing with her 8-year-old son, Apollo. The same weekend, the country crooner turned 46, which was another opportunity for the No Doubt singer to shower him with love. The cute couple, who married last year, will soon reunite as coaches on ‘The Voice’ this fall.