"(The break-up has) been hard for him," an unnamed source revealed to UsWeekly. "They're still friends, so you never know if they might get back together in the future."
The pair was only an item for a couple of months. It was previously reported they met through mutual friends back in May, and would often make time to see each other in L.A. and NYC.
They were last spotted together when they took a romantic vacation in Ibiza. "Fun & Sun in Ibiza right now!! Thanks Hard Rock Hotel @hrhibiza #hrhibiza #ThisisHardRock," Rebel wrote via Instagram on July 22, alongside a snap of her then-boyfriend. "Hard Rock Rising Barcelona x," she captioned a second selfie of the duo.
A witness told the publication that the two sat in the VIP section at the Hard Rock Rising Festival during the staycation. "They were just really cute [and] having fun," the onlooker divulged. "Mickey would pinch her cheek and face and then sat down next to her where they were whispering and dancing in their seats."
Rebel and Mickey were also caught in a New York Rangers game at Madison Square Garden back in May. They even donned and coordinated in Rangers outfit for the big match and were spotted holding hands before heading back to their hotel. See a photo here.
In the same month, the Australian actress blamed her hectic schedule for not being able to maintain a stable love life. "You have to sacrifice relationships because you work, and now I travel all around the world," the 35-year-old star told Australia's Elle magazine. "I'm constantly moving and constantly travelling and so it's really hard to maintain a relationship in that kind of environment."