Selena Gomez 'flirts' with Orlando Bloom, Justin Bieber 'furious?' Ex-boyfriend jealous of Instagram PHOTO with 'hater' Seth Rogen & Miranda Kerr's ex

Selena Gomez, Orlando Bloom, and Seth Rogen recently took part in the We Day California conference held on March 26. Check out a stellar review of celeb-studded event here.

Backstage, the "Come & Get It" songstress posed for a snapshot alongside the two popular (and much older) actors:

selenagomez: "#Weday - unbelievable time. So inspired and hopefully encouraged many!!" 

And apparently, on-and-off again boyfriend Justin Bieber is "furious."

As several fans probably already know, Rogen isn't the biggest fan of the "Believe" troublemaker.  And Bloom probably isn't either, considering the Biebs rumoredly hooked-up with his stunning ex, Miranda Kerr.

Therefore, HollywoodLife.com speculates that the 20-year-old pop sensation is extremely jealous that Gomez would hang out and "flirt" with them.

Really!?

Now, apparently the two are fighting again:

"Their drama always starts because they don't trust each other. It's not only Selena that gets jealous - Justin is just as bad - he's the one that started the latest fight," an alleged insider reveals. "He accused Selena of flirting with Orlando Bloom... He knows that it bugs Selena when he hangs out with Miley [Cyrus] so of course he wanted her to know about it, because he's feeling insecure and he wants to make her feel the same way."

Sounds a little too vague... so Gossip Cop checked with another "legit" source who insists that such rumors are "total nonsense." Bieber is NOT jealous of Gomez "flirting" with Bloom, and he's definitely not ready to start a Hollywood "feud" with Rogen.

As for Jelena, fans will have to wait and see what happens.