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EXCLUSIVE: Amber Heard's jealousy over Johnny Depp's 'chemistry' with Aussie co-star led to split

9The FIX logo 9The FIX 26/05/2016

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Amber Heard has filed for divorce from Johnny Depp after 15 months of marriage, and now the question on everyone's mind is what went wrong.

There have been rumours of rifts almost from the moment they got hitched in February of last year, and now TheFIX has learned exclusively that 52-year-old Johnny's return to his old partying ways and his relationship with one of his co-stars sent Amber, 30, to her divorce attorney.

According to our source, Amber was seeing green over Johnny's closeness to Aussie actress Mia Wasikowska, his 26-year-old co-star in the new movie s, a sequel to their 2010 film .

"Mia looked up to Johnny a tad too much for Amber's liking, and she felt the father-daughter vibe between them had crossed the line and that Mia was falling for her mentor and Johnny was lapping up the adoration," our insider says. "She accused Johnny of cheating on her and he just walked out and called her a jealous monkey. It got ugly. 

"He was used to [his ex-partner] Vanessa Paradis looking the other way at all of his attractions, but Amber is not like that. She needs to be number one at all times, and that is not how Johnny made her feel.

Johnny's 20-something Aussie co-star; Mia and Johnny at the 'Alice Through the Looking Glass' premiere in London. © The Fix Johnny's 20-something Aussie co-star; Mia and Johnny at the 'Alice Through the Looking Glass' premiere in London. His work was first, and he made her feel she came second."

And that's the opposite of how Mia apparently made Johnny feel.

"She saw texts in his phone to Mia that proved to her he was flirting with her," the source adds. "Johnny would tell Mia how great he thought she was, and that just drove Amber over the edge.

"She would read Mia's gushing interviews about Johnny, and it drove her nuts. She couldn't take the chemistry between the two stars, and she was convinced something was going on."

Interestingly, in April of last year, Page Six reported that Amber's relationship with female photographer iO Tillett Wright was causing friction in their marriage.

Around the same time Johnny injured his hand on the Australian set of , reportedly after smashing it into a glass door following a phone argument with Amber.

Another issue, according to our source, was Johnny's return to bad-boy form after trying to stick to the straight and narrow.

"Johnny loved to go out late and enjoy himself with drinks and anything else that was around," the insider said. "She wanted him to be completely sober, and he wasn't having it.

"He rebelled! At first, he did anything she wanted, but then he simply said, no more, it's time to be me again."

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