The grass is always greener, and it looks like The Biebs is learning that the hard way!

Justin Bieber grabbed lunch at Giorgio Baldi in Santa Monica on Thursday, and the singer looked sad and clearly had something on his mind as he headed into the restaurant. It seems Selena Gomez and Orlando Bloom's budding new romance is getting under JB's tattooed skin! The smartest thing the "Come & Get It" songstress ever did is give her bad boy beau a taste of his own medicine, because now he definitely appears love sick.

The Canadian crooner has a weird power over the brunette beauty, though, and reports claim she's already entertaining the idea of a reunion. "Selena and Justin are talking again. None of her friends think it’s a good idea but she’s taking his calls. She hasn’t said that she’s going to take him back but that’s usually how it goes once they get back in touch," a source dished to Hollywood Life. "She’s been saying stuff about how she overreacted and how she has to take responsibility for her part in things so it definitely seems like she’s opened her heart up to him again," the source added.

Miss Gomez must not have seen the video of the chart topper hitting on a Princess Jasmine look-a-like on a street in Beverly Hills yesterday, or else we doubt he would have this easy of a time getting back in her good graces. Then again, SG is pretty much the definition of a doormat and suffering from a terminal case of Bieber fever, so we give it about a week before they're back together!