Lance Bass Shares Mile High Club Shocker, Teases 'Vanderpump' Wedding and More

Lance Bass has had a wild and crazy career as part of one of the biggest boy bands in history, and he did much of it while still in the closet. And as it turns out, he did a lot of things while firmly in the closet, as he shared on "Watch What Happens Live" with a wink and a smile.

The ever-jovial Bass was an absolute hoot throughout his appearance alongside NSYNC super-fan and fellow guest Chrissy Metz ("This Is Us"), even when Andy Cohen was hitting him with some very personal questions, like his coming out and even whether or not he'd become a member of the Mile High Club (i.e. having sex in an airplane).

Of course, it's hard to be a boy band superstar without experiencing sex in every conceivable situation, so of course Bass admitted that he'd done that. "It was on a [Business Boeing Jet]," he said. "'Cause it has a bed."

But that wasn't the biggest surprise. Cohen next asked him if it was before or after the Reicher years, referring to Bass' one-time boyfriend Reichen Lemkuhl. The couple was in a relationship when Bass came out publicly in 2006, remaining together until early 2007.

"It was well before because it was with a woman," Bass said with a wicked smile for the cameras. "I know, breaking news."

And that wasn't all the tea he was willing to spill, as Cohen's logical next question was to ask if he was sleeping with women during those NSYNC years before he came out.

"I was doing it and doing it and doing it well," he laughed, adding, "We had to do what we had to do to survive."

Bass has previously spoken out about his decision to remain in the closet during NSYNC's heyday in the spotlight during the band's ceremony upon receiving a star on the Hollywood Walk of Fame last year.

"At the time, I thought that I would never be able to tell anyone," Bass said in a moving speech at the ceremony captured by ET. "Because not only was I terrified of the lasting rejection -- I was certain that that would happen -- but more than that I didn't want to jeopardize the careers of these guys up here, much less the hundreds of amazing people who worked tirelessly to bring NSYNC to the world."

And so Bass did his part tirelessly as well.

He did, however, come out privately before doing so publicly in 2006, and that story is always hilarious to recall. It all went down the night Britney Spears married her childhood friend in 2004, which was not a great time for her. And so Bass, who was there for the craziness, used the only tool in his arsenal to try and help his friend.

"It was a funny thing and then she started like really crying, like she was so upset," Bass said of Spears realizing what she'd just done. "So we go to her room, we're sitting on the bed and she wouldn't stop crying, so I was like, 'I'm gay?'"

Perhaps not the best or most meaningful way to come out to someone, but "it made her stop crying."

When sharing this story to MTV In 2007, though, Bass also revealed that it would be the last time the two spoke together for awhile. "I tried. She's my neighbor in Beverly Hills. She lives next door. I tried to get in touch with her - I wanted to be that friend to help her."

Of course, this was during the years when Spears' tumultuous personal life dominated her career and media headlines, so she wasn't in the best place to be a friend to Bass or anyone. It would be another year before she began her career comeback with the massive "Womanizer" hit off of her 2008 album "Circus."

And the downturn in their friendship would prove temporary, as Bass talked with Cohen in 2013 on "WWHL" about his close friendship with Spears over the years and how they still talk.

Cohen wasn't going to let Bass off the hook without digging into the revelation that he had officiated the wedding between "Vanderpump Rules" stars Jax Taylor and Brittany Cartwright, even though the wedding has yet to air on the show and Cohen knows as well as anyone that Bass isn't allowed to spill any deets before Cohen's own network broadcasts it.

He can't help it, though, he's a slave to the tea.

And so he tried his best, asking Bass pointed questions like who got the most drunk and if he saw any "explosive fights or crazy hookups."

To the former, Bass reminded the host that this was a wedding reception and drinking is kind of what you do, but as to the latter, he said, "I did and I am pleading the fifth."

But it's possible the cameras will do no such thing, so that's as good a tease as any for fans to tune in to the wedding episode of "Vanderpump Rules"

Oh, and Cohen also asked Bass if it was embarrassing when the deejay started laying down some NSYNC tracks. Bass actually found it endearing, but even more so he was "surprised that they actually knew the dance moves of 'Bye Bye Bye.'"

He also teased the couple's handwritten vows, which has us even more excited to hear them. "I thought they were very them," Bass said diplomatically. "Especially Jax's." Oh, can you just imagine how Jax chose to express his love? We need this episode now!

But perhaps our favorite moment came when Cohen asked Bass if Scheana Shay cried. His answer was just sheer perfection if you read between the lines to her what he's really saying.

"I tried to stay away from the cameras as much as possible, so I didn't really get to see her too much." Guess we know who tried to be with the cameras as much as possible!

Fans will get to see everything the cameras captured (including Scheana Shay) on the forthcoming eighth season of "Vanderpump Rules" on Bravo.

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