Justin Bieber & Selena Gomez -- Back Together ... Again

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Justin Bieber & Selena Gomez
Back Together
... Again Biebs Instagrammed this pic today, with the caption "#heartbreaker."

We give up.

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Justin Bieber Photo Shoot Rules -- Don't Talk to Me ... And No Selena Gomez Music!!!

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Bieber Photo Shoot Rules
1) Don't Talk to Me ...
2) No Selena Gomez Music!!!
Justin Bieber is a paranoid, self-absorbed megalomaniac ... is what you've gotta think after seeing the laughable rules he sets for photo shoots -- including a ban on speaking to the Bieber, and NEVER playing his ex ... Selena Gomez's music.

TMZ has obtained a rider from a Bieber photo shoot earlier this month, and other restrictions include NO cell phones and NO autographs whatsoever ... which are actually pretty common demands.

But Bieber also has a laundry list of food demands on set -- including herbal teas, a deli platter, a veggie platter, a large pack of Swedish Fish, Ritz Bits Peanut Butter Sandwiches, Ritz Bitz Cheese Sandwiches, and 2 large packs of Haribo cola gummies.

Munchies much?

Bieber also must have a serious sweating problem -- because he asks for several packs of white undershirts, tanks and socks as well. Weird.

Then of course, there's the required boombox with an iPhone 5 connector ... for tunes.

Just remember: "No Selena Music on set."

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