Love is in the air. It has been nearly three years since they announced that they are dating, but Gwen Stefani already sees herself growing old with boyfriend Blake Shelton.

It came to light when a source told Hollywood Life that Gwen Stefani and Blake Shelton are already planning to grow old together. The source added marriage is certainly on the cards, but it will not happen until 2019.

"It's only a matter of time because Gwen [Stefani] truly sees herself growing old with Blake," the source close to the "Hollaback Girl" singer told the publication. "She is sure that he's her person and ultimately she does believe in marriage. Even though she's not talking about it, her friends know it's in the cards eventually. But as far as their commitment, it seems rock solid. It's obvious they're both completely in love with each other and all in," the source added.

This comes shortly after Life & Style Weekly reported that Gwen Stefani's children from her previous marriage to musician Gavin Rossdale -  12-year-old Kingston, 10-year-old Zuma Nesta, and four-year-old Apollo Bowie - will act as the ring bearers at her wedding to Blake Shelton.

The publication went on to claim that Gwen Stefani and Blake Shelton does not plan to have a grand wedding. Instead, they prefer a small and intimate ceremony in Mexico with their families and closest friends in attendance, including the former and current coaches of "The Voice."

While many fans are excited about Gwen Stefani and Blake Shelton's wedding, it is worth noting that both singers have not commented on the matter as of press time. Hence, the wedding reports should be taken with a grain of salt.

Gwen Stefani and Blake Shelton first fell in love after working together as judges on NBC's popular singing competition show "The Voice" in 2014. Since then, the two have been vocal about their feelings for each other.

"When I was going through my divorce and just hit rock bottom... it was a miracle that I met somebody that was going through the same exact thing that I was at the exact same moment in time," Blake Shelton said about his relationship with Gwen Stefani, as quoted by Entertainment Tonight Canada. "But now here we are, going on three years later and every day that goes by just feels like a stronger bond between the two of us...it constantly feels like it's going to the next level," he added.