Justin Bieber was a sweet ex-boyfriend to Selena Gomez during her struggle with lupus.
According to a source, the Canadian pop star helped the former Disney darling through her difficult time dealing with the illness, which she revealed recently in an interview with Billboard.
Selena opened up to the magazine earlier this month that she had undergone chemotherapy to treat the illness when she was rumored having addiction to drugs.
Detailing the sweet actions that Justin would take to show his support for Selena, the source says, "He would always tell her she's the most beautiful girl in the world, and that it wouldn't matter if she gained weight, lost her hair, or anything."
"They have obviously had a lot of ups and downs in their relationship, but he really stepped up for her," the source says of the exes, adding, "That's not to say there haven't been plenty of other times when he was a jerk, but he knew she was struggling, and he wanted to let her know he was there for her."