Stefani, 47, and Shelton, 40, have been officially dating since November 2015. More than a year later, the lovebirds seem more enamored with one another than ever. Earlier this month, the couple took Stefani's children -- Kingston, 10, Zuma, 8, and Apollo, 2 -- on a weekend getaway to Big Bear Lake, California, where they stayed at a local hotel and were joined by the No Doubt singer's brother and wife.
"They looked happy and loved up, showing a lot of PDA, hugging and kissing," an eyewitness told ET about their family getaway.
"I think she knows it's going to be Valentine's Day, so I can't really surprise her with that," Shelton joked. "No, I'm kidding. I don't know. I'm one of those guys that's always last minute, like, 'Oh dammit. It's here, it's here!' Get some flowers or something. I'm not good at planning surprises when it comes to Valentine's Day, but we'll definitely celebrate."