Tom Schwartz and Katie Maloney are not legally married, according to the couple's friend Lance Bass.

Tom and Katie were "married" in Northern California back in August of 2016, but according to Lance, the Vanderpump Rules star's wedding wasn't legal.

During an interview on Reality Bytes with Rob Evers, the NSYNC singer dropped the bombshell. Lance is legally a minister and he's performed legal weddings win the past (he recently officiated the wedding of Vanderpump Rules stars Jax Taylor and Brittany Cartwright).

Lance told Rob, "“We just found out Tom and Katie are not married. They did not send in their materials right. So, they are not married,” he explained.

Then Lance added that the couple's non-marriage, will be addressed during the upcoming eighth season of Vanderpump Rules, which is currently in production.

“I think that might be a little storyline,” Bass confirmed.

Lance didn't specify whether the couple purposely or accidentally failed to send in the marriage documents.

After officiating the June 29 wedding of Jax Taylor and Brittany Cartwright in Kentucky, the NSYNC singer appeared on the Reality Bytes podcast, where he shocked fans with the unexpected news about Tom and Katie.

“We just found out Tom and Katie are not married. They did not send in their materials right. So, they are not married,” he alleged, also stating that the news “might be a little storyline” on the upcoming eighth season of Vanderpump Rules.

Although Tom and Katie, who purchased their first house together earlier this year, have not addressed Lance’s claim quite yet, a Hollywood Life source claimed shortly after Lance’s interview that the couple was “confused” by Lance’s revelation about their marriage.

“Tom is very by the books with everything he does. He is very on it about everything. He and Katie consider themselves happily married and are surprised by this,” an insider said. “If he’s not legally married, he’d be as surprised as everyone else as they made sure their paperwork was all there.”