Blake Shelton "always teased" Gwen Stefani.

Gwen Stefani

Gwen Stefani

The 'God Gave Me You' hitmaker has reportedly been close with the 'What You Waiting For' singer for a number of months but the "dynamic" has changed between them since the pair divorced their respective partners.

A source told PEOPLE magazine: "Blake was always teasing her and joking with her and that evolved into flirting. Everyone is very happy for them. She truly seems happy now.

"Both of them were very hurt and they went through similar situations. They were supportive of each other, and once her divorce was settled, it just changed the dynamic."

Meanwhile, Gwen previously praised her new boyfriend and the show on which they both star, 'The Voice USA', for helping her get through her tough break up.

She said: "There's been loads of people that have helped me with this tragedy. There's definitely key people that have pointed me into the right direction. Blake really helped me. He's a pretty rad guy, I have to say that.

"I got so much out of that first season [of 'The Voice USA'] that I didn't expect, creatively, from being around so much music. There were hard times before the baby, personally, that were just not good. And then having Apollo, and being on the show, and being refreshed - it was just like, 'Whoa!'"

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