When a couple breaks up, it’s inevitable that their friends take sides. Well now that seems to be happening as sources close to both sides start spilling the beans about what really went on between Miley Cyrus and Liam Hemsworth.

According to TMZ, Miley’s sources claim Liam was using “certain drugs,” while Liam’s sources claim infidelity on Miley’s part.Miley Cyrus‘ public image may be that of a wild child, but sources say the singer fought with Liam Hemsworth privately about his own partying ways.

“Everyone always thinks Miley is problematic and immature and a hardcore partier while he’s this chill surfer dude, but that’s actually [not accurate],” a friend of the couple tells PEOPLE exclusively. “Liam parties with his friends, and Miley thinks he should’ve grown out of that by now.”

Another Cyrus source, who agrees Hemsworth’s personality is much more complicated than the “super easygoing” public image that’s presented, says the actor can get “moody.”

“She’s been supportive of him when things get dark, but it’s tough,” says the Cyrus source. “That’s something that has weighed on Miley and their relationship. He can also lash out at her, and he hates the attention their ups and downs bring.”

Multiple sources also agree that Cyrus’ public displays of affection with pal Kaitlynn Carter are partly because Miley is hurting from her breakup.

“She’s genuinely trying to have fun and put on a good face,” says the source. “Yes, she’s trying to push Liam’s buttons whether she’ll admit it or not, but she’s hurt.”

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