Though they may be back together (we hope!), if the current crop of rumors behind the Jelena split is to be believed, then the couple, who seemed totes perfect together, was probably doomed from the start. Tongues are wagging that both Justin Bieber and Selena Gomez were both way too jealous to work out.

E! Online reports that friends of the couple said the breakup was "a long time coming." Apparently both parties, not just Gomez, had trust issues. In fact, one particular photo of Selena and a co-star sent the Biebs reeling. When on set for 'Parental Guidance,' Sel smooched her co-star Nate Wolff -- for a scene in the movie, nothing more. But when a photo of the liplock hit the Web, Bieber supposedly flipped out. (You can see the pic here.)

"[Justin] freaked out on that," said a source. "He would get jealous and she wouldn't tolerate it." Another source wouldn't confirm whether the pic was the beginning of the end, but did admit, "Justin was very jealous of it. He knows it was a photo of them filming, but it still made him jealous."

Naturally, there was no official response from either half of the couple nor from their camps, who have yet to even officially confirm a breakup. But a source simply explained, "They're young. Of course they have their jealous streaks. Justin has gotten jealous, and so has Selena."

Despite the breakup being almost inevitable according to their pals, Sel is reportedly bummed about it -- despite being the one who dumped Biebs. A source dished, "She's sad. It's hard for her." Naturally! How's she dealing? "It's really good that she's with family and friends," the source said, adding, "She's going to be in the studio. That's what she's focused on."

Here's hoping they can work it out -- at least in time for the 2012 American Music Awards, because Bieber is slated to sit next to Gomez's BFF, Taylor Swift. Awkward alert!

Watch the Justin Bieber 'As Long as You Love Me' Video