Gwen Stefani and Blake Shelton are reportedly considering getting married, just four months after they began dating.

A friend of Gwen's tells People magazine that the couple are head over heels for each other and may be looking to walk down the aisle in the not so distant future.

"For now, they seem happy with their relationship, but Blake is old-fashioned and a future engagement seems very possible," the source claimed. "Gwen thinks of Blake as the biggest blessing."

Although they're apparently "not putting pressure on themselves" and are "just enjoying life together," the insider says their friends see a "long-term future" for the couple, who made their relationship red-carpet official at the Vanity Fair Oscar party on Sunday (28Feb16).

The inseparable pair also spent the past weekend together as they celebrated the wedding of former The Voice contestant RaeLynn Woodward in Nashville.

The couple, whose romance began when they worked together on the TV show in 2015, are also set to reunite on the hit singing competition this season when the No Doubt singer, 46, returns as a mentor for Team Blake.

Blake, 39, previously said inviting the blonde beauty to work with his singers was an obvious move.

"I looked at my phone, like somebody from (network) NBC said, 'Hey, you need to pick a mentor for this season,'" he said. "I am like (as he turns his head to the side), 'Hey, you want to be my mentor this season?' She's like, 'Sure.' (I said,) 'OK, Gwen said she will do it.'"

The pair went public with their relationship last November. Before that the Hollaback Girl singer was married to Gavin Rossdale, who is the father of her three sons, Kingston, nine, Zuma, seven, and two-year-old Apollo, for 13 years.

They finalised their split in October (15), three months after Blake and his ex-wife Miranda Lambert announced their divorce.