Nick Lachey and Vanessa Minnillo: So Back On!

If there was any doubt that Vanessa Minnillo and Nick Lachey, who called it quits back in June, are now back together, well, this would sort of be it!

Following a make-out session last week, the sexy pair are making no attempts to hide their rekindled romance, according to the ever-reliable OK!.

Heck, earlier this afternoon, as a matter of fact, Nick and Vanessa grabbed lunch - and each other! - at the N.Y. City comfort food favorite Duke’s.

Witnesses say the couple were holding hands over the table as they ate and chatted. “They’re definitely back on,” one witness said of their behavior.

Last weekend, the former husband of Jessica Simpson and former MTV VJ made news by locking lips at a club. It's so back on, it's not even funny.

It's only a matter of time until we see Part II of this classic pool display ...

Vanessa Mannillo climbs atop Nick Lachey. In the pool. Hot.