Shelton divorced fellow country star Miranda Lambert in July 2015 after four years of marriage. Stefani filed for divorce from Gavin Rossdale, with whom she shares three sons, the following month. She and Shelton went public with their relationship that November.
"When I was going through my divorce, and just, hit rock bottom just like anybody does when they go through something that devastating, it's a miracle that I met somebody that was going through the same exact thing that I was at the exact same moment in time," Shelton said on the upcoming episode of NBC's Sunday TODAY with Willie Geist.
"And I think if Gwen and I were being honest right now, talking about this, I think in the back of our mind, that we both kind of thought, this is a rebound deal because we're both coming out of a low spot in our lives and we're kind of clinging to each other to get through this," Shelton continued. "But now, here we are, going on three years later and every day that goes by, it just feels like a stronger bond between the two of us and it constantly feels like it's going to the next level. That's the only way I think either one of us would probably describe it, if she was sitting here."