Blake Shelton gushes that 'romance' is in the air as he promotes collaboration with Gwen Stefani

Blake Shelton is planning on a loving Christmas with girlfriend Gwen Stefani this year. 

The two are promoting their duet You Make it Feel Like Christmas, and Blake admits the song is all about their own romance.

Asked if the couple's love story inspired the song, he told Entertainment Tonight: 'I would like to think so, come on. This is romance around here, of course!'

Recorded by Gwen, the song features Blake's vocals, and he also contributed to the lyrics.

These include the lines: 'I never thought I'd find a love like this. But I found forever in that very first kiss.'

Blake said Gwen was responsible for the majority of the song.

'I sent Gwen a couple of lines of the song. She took it and made the song what it is. I just sent her an idea.' 

The 42-year-old star also gushed over his partner's beauty and claimed she always looks her best no matter what the occasion.

After The Voice co-star Jennifer Hudson praised Gwen's appearance in the video for loved-up duet You Make It Feel Like Christmas, Blake added: 'How gorgeous does she look all the time? It's unbelievable. Right now, wherever she is, she looks gorgeous, whatever she's doing.' 

The couple are currently planning for their own Christmas celebrations, and the star admitted it was going to let the Hollaback Girl hitmaker decide on their plans for the festive season. 

He said: 'She normally just tells me what we're doing. So, I couldn't tell you what they are, [but] just wherever she is, I'll be there.'  

Gwen asked Blake, who was named People's Sexiest Man Alive last year, to join her in the new music video for You Make It Feel Like Christmas.

The romantic number is the title song of Gwen's new Yuletide-themed album, which she dropped at the beginning of October.

Though the record does contain original material, fans of Christmas music can catch some old standards as well - Santa Baby, Silent Night and Jingle Bells, for example.

In fact, the album is awash in popular old seasonal favorites ranging from Silver Bells to Let It Snow to White Christmas to Last Christmas.

Gwen was married to Gavin Rossdale from 2002 to 2016 and began dating Blake in 2015. At that point she and Gavin had already split up after he was exposed as cheating on her, but were still in the legal process of divorcing.

The Rich Girl singer - who has Kingston, 12, Zuma, 10, and Apollo, four, with her former husband - recently credited Blake for 'inspiring' her to 'change', and praised him for being an 'amazing all-round human'.

She said: 'He's inspired me so much. He's changed my life.'