Demi Lovato opens up about 'darkest moments', thanks friends

American singer Demi Lovato reflected upon her rough patch and showered love on the people who stood by her during what she called the darkest phase of her life.Lovato and her friends Sara Elizabeth Mitchell a.k.a. Sirah and Matthew Scott Montgomery recently returned after vacationing at Bora Bora. The singer opened up about the importance of their friendship in the wake of her overdose last July.In a lengthy Instagram post, the 26-year-old singer celebrated her two friends for their unconditional support through these years and thanked them for never leaving her in her "darkest moments."Along with the emotional note, Lovato also shared a photo featuring her with the two friends."Just me and my best friends living our best lives. Thank you for never leaving me in my darkest moments, for always drying my tears.. even when they're from watching Moana. Thank you for being loyal, honest and so grateful for every little thing.. like crying because we swam with fish/sharks/stingray and ...