AceShowbiz -

Aww, aren't they so sweet? Blake Shelton and Gwen Stefani apparently like to write love songs for each other every now and then. The country singer reportedly loves to write "little songs" for the "Hollaback Girl" hitmaker as reminders that he loves her, and she has returned the favor.

"Blake more than Gwen writes little songs, mostly choruses to Gwen and leaves them around for her to find and that is one of the ways how he shows her that he loves her," a source tells HollywoodLife.com. "She has repaid the favor but it was Blake who started it and continues to do it. It makes her feel spectacular!"

The sweet gesture is definitely swoon-worthy, but it would be even more perfect if Blake and Gwen team up to bring their "little songs" to the studio. The two previously collaborated on "Go Ahead and Break My Heart", and fans have been patiently waiting for another duet.

Aside from music, Blake and Gwen have been spending a lot of time together as a family. Blake "loves hanging out with Gwen's boys, he's especially close to Kingston, who he's currently teaching guitar to," according to the source. "Blake's careful not to step on Gavin Rossdale's toes, he doesn't try to be their dad, but he's always there for the boys."

The "Austin" crooner is said to be very devoted to Gwen's three children. "He told her that even if she decides to get up, dump him and break his hears, he will always be there for the boys," a source previously said. "He loves them just like he loves Gwen."