It's nearly a year since they broke up, but rumours on Robert Pattinson and Kristen Stewart's long-gone relationship are still emerging - with this latest one suggesting that they had an open relationship all along.
If the claims, published by Radar Online, are true, it means that perhaps K-Stew's infidelity with Rupert Sanders may not have been such a big deal after all.
The US site's sources claim that both Twilight stars enjoyed flings with other people, and it was all part of the arrangement from the get-go.

Kristen and Rob exactly a year ago (WENN)
"When they were officially dating, they always had a policy of 100 percent honesty, which did create issues. Robert was always very frank about his flings with other women and that worked for Kristen too," the alleged insider said.
"They had an open relationship and it's amazing that Kristen hasn't revealed this info when she was being painted as a 'jezebel'. Rob has had other women on the side and Kristen has had other women and men as well."
Radar's informers also reckon that the pair are still hooking up, adding that they were never really in a conventional relationship anyway.
"Their relationship was always a business and a spiritual partnership more than a romantic one. Rob and Kristen often said they might never see each other again after the last Twilight press tour and that's pretty much what happened, except for their 'are you in town' booty calls," it is explained.
"They were pretty up-front with each other when they got sick and tired of each other. It was the strangest relationship, but keeping each other at arm's length is working in their favour.
"Kristen and Rob are still close and definitely in contact, and they still sleep together when the opportunity comes up."
As with any story relating to the actors' relationship, they have not officially commented.
What do you think? Do you believe Radar's claims?
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