It looks like Calvin Klein might be tiring of his 21-year-old boyfriend Nick Gruber. Klein was partying without his main man this weekend and now it appears the two are "on a break."

A "source" close to the couple told Gatecrasher they're "on a break...They could get back together, but who knows?" "On a break" is PR speak for "We've already broken up, but we haven't figured out how to announce it yet." Either that or they're actually on a break. But other than Ross and Rachel, have you ever known anyone to reunite for good after a break? No.

Klein, 67, Gruber started dating last year and their relationship even weathered the revelation that Gruber used to perform in gay porn. It seemed like their relationship might be the real deal, but now it's starting to sour. The source described them as "on-again-off-again." Is Calvin trying to stay relevant by having turbulent relationships with porn stars just like Marc Jacobs?

Poor Nick, what is he going to do for a job now that he's not at Calvin's beck and call? Out magazine published a photo spread with Gruber yesterday and listed his profession as personal trainer. Well, that makes sense. What did Out say he was wearing? Calvin Klein, of course. But we think they mean the swim trunks, not the plastic surgery Calvin paid for.

[Image via Getty]