The young couple first split in late 2012, but they've been making up and breaking up ever since.
Selena spoke about her relationship with the 'Baby' singer in an interview with US radio show on On Air with Ryan Seacrest, and said that she'll always be in his corner.
"I support him. I think I always will," revealed Selena. "I'm upset when he's upset. I'm happy when he's happy. I don't want anything ever to happen to him bad. It hurts me. That's all."
Both she and Justin have had a troubled time this year. Selena was admitted into rehab in January, while Justin has been arrested twice and was involved in a very public altercation with actor Orlando Bloom in July.
"I made some decisions that weren't great [in 2014]. So did he. We went through that to only make us better," she said.
The Spring Breakers star also hinted that her new single The Heart Wants What It Wants is about Justin, and says that he is a fan of the video.
Selena seemed to suggest that their romance is over for now, but something tells us the pair will find themselves back together once again.
She also addressed her rumoured feud with Kendall Jenner, which was the subject of much speculation after Selena unfollowed the model on Instagram.
"We were never not friends... I didn't realise it was going to start that," she explained. I was just like, 'You know what, I'm just going to follow my fans.' I didn't know that [unfollowing] was like a thing."
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