Just like that, huh?

After some serious PDA at the Grammys, where they posed for romantic photos, all nuzzled up against each other and looking like a coupla teenagers in love, Rihanna and Chris Brown appear to be on the outs…AGAIN!

ChRihanna reportedly ignored one another, arriving separately and after midnight (Feb. 15) at L.A. club Playhouse. Yes, the same club where Breezy was heckled by someone claiming to be a member of the notorious L.A. gang The Crips.

WTF is up with these two? Weeks after RiRi put it all out there -- no, not a topless photo -- for the world to see, revealing that they were back together, that it was her choice and her mistake to make and that he has no room to mess up again, it appears they may be tiffing.

A witness told Us Weekly that RiRi and Breezy were not speaking, hanging out with their friends but not each other while up in da club. "She refused to sit with or even near him," the onlooker said. "When she noticed he was there, she made a huge show of rubbing her presence in his face."

You know, we'll play devil's advocate here and suggest that maybe they don't need to be all rubbing up on each other at every public appearance. They have nothing to prove anymore.

Meanwhile, Ri celebrated Valentine's Day with a whole lot of pot. Someone gave her a green bouquet. It was a big ol' pot leaf, which we know the Mary Jane lover appreciated. It's going to take her months to smoke all that.

She Instagrammed a pic of her present, posting: "Roses are green! Somebody knows how to make me happy."

Could Breezy have been the gifter? It's possible, since he has his California weed license. But it's not legal to purchase herb for others.


Watch the Rihanna 'Stay' Video