Demi Lovato: "I Only Have Four True Friends"

Demi Lovato, 19, said that she really learned who her true friends are after spending time in a Chicago treatment facility.
“After I got out of treatment, I turned on my phone, and there were only four text messages,” she said in US Weekly. “I was like, ‘Wow!’”
We know Selena Gomez is on of her BFFs, but who do you think are the other three?