Friends of Miley Cyrus and Liam Hemsworth have alleged that they argued about his partying before their split.
Although Miley, 26, has a reputation as a "hardcore partier", friends of the "Can't Be Tamed" singer have claimed that Liam's nights out with friends became a problem for the couple.
A friend of the former couple alleged to PEOPLE: "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. Liam parties with his friends, and Miley thinks he should've grown out of that by now."
Another source close to Miley claimed: "She's been supportive of him when things get dark, but it's tough. 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."
The insider claimed that Liam is more complicated than his "super easy going" public image would suggest.