It appears the rumor that Gwen Stefani and Blake Shelton are planning to marry before the year is over won't go away anytime soon, and it seems to be giving more credence to the report.

Most recently, Stefani sparked new rumors about their relationship when she got tongue-tied while On Air with Ryan Seacrest after he asked if she would ever marry again.

"Everything is going so quickly...I'm in the moment and, um, look at me, you've got me tongue-tied," she said.

Now, according to Us Weekly, the reason Stefani got so flustered when asked was because she and Shelton are in fact planning to marry before the year is through, but they haven't even told their families a date yet, hence the secrecy.

"They want to get married before the end of the year," a source told the magazine.

"Gwen has sad they both want something more low-key than their first weddings," another source previously said. "It would likely be at Blake's ranch [in Oklahoma] or in the backyard. Gwen doesn't really care, she is just in love with Blake and their life together."

For now, since they are planning to keep their plans low-key, and they want to make sure their families are the first ones who learned about it, they are just enjoying spending time together during their tours. Shelton made some guest appearances on Stefani's This Is What The Truth Feels Like Tour, and Stefani has since appeared at Shelton's If I'm Honest Tour Kickoff in Oklahoma City, to perform their duet "Go Ahead and Break My Heart."

Overall, the pair are just enjoying their time together, as they grow closer to their one year anniversary as a couple.

"They are both very, very happy," a source said. "Blake is having the time of his life with Gwen and feels so comfortable around her."