Before Jessica “I’m Too Sexy For This Job” Biel became Justin Timberlake’s official girl, the two used to spend hours chatting on the phone, just getting to know one another.

“We did a lot of phone conversations,” Jessica admitted in an interview on the Late Show With David Letterman. “PG phone conversations!” she quickly added.

Apparently, Letterman is the only person in America who didn’t know that J.B. has been doing the mattress mambo — amongst other things — with Timberlake for nearly two years.

It must be lonely under that rock, Dave.

“So, you’re dating the guy? We know this, we don’t know this? We can talk about it, we can’t talk about it?”

“We can talk about it!,” she said. “Yes, we’re dating.”

“How long now?” David asked.

“A few years.”

“A few years! Really?” said a surprised Letterman. “Am I the only one who doesn’t know this?”

“I think so,” Jessica giggled.