Bradley Cooper and Renee Zellweger have been spotted getting friendly over the past few weeks -- being spotted enjoying dinner in NYC and working up a sweat at a gym in L.A.

And maybe that's just because the actors and Case 39 co-stars are "just friends." But if that's true, then theirs is a very special kind of bond that involves romantic getaways to Spain and the occasional tender moment of ass-groping. (And to think the most we've ever done for our BFFs is hold their hair back while they puke. Reader pals, if you ever have an ass that needs grabbing, we're there for you.)

The pair was seen in Barcelona yesterday enjoying several slightly-more-than-friendly moments together. Celeb gawkers in the Spanish city told The Daily Mail the couple was seen embracing while sight-seeing at a local church. And the paper's sneaky photogs have managed to snap pictures and video of the couple while they were unwinding, catching a quiet breakfast together at their hotel and heading out for a dinner with Cooper's Hangover co-stars Justin Bartha and Zach Galifianakis.

And oh yeah, there's a photo of Cooper cupping Zellweger's behind as she puts a hand in his back pocket. If we remember anything from Grade 7, that's a total sign that they've gone to second base.

See the action shots below:

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