Mandy disapproved so badly that she ended up in HOSPITAL over it. Yikes.
A source close to the family told TMZ that Mandy freaked the hell out, after realising that Selena and Justin's relationship was more serious than she first anticipated.
However, now that Selena and Justin have broken up... Mandy has a few requirements in a potential boyfriend.
“A sense of humour,” she said, adding that he also has to be “family-oriented” and “someone who truly understands the life that she lives.”
Unlike Justin, of course...
It's interesting that Mandy is now talking about Selena's love life, since she had an issue talking about it in March, when E! News asked her.
"You would know before I did," she said. "We don't talk about it."