Demi Lovatois in mourning.
On Instagram, the star expressed that she is "devastated" over the loss of her friend, Thomas. "Please hold your loved ones tight. Tell them they are special and that you love them," she said on her Instagram Story. "Make sure they know it. RIP to my boo @sirtruss."
She added, "Addiction is NO joke.. heaven gained this beautiful angel last night because of that terrible disease. I'm crushed and will always miss you @sirtruss."
As someone who formerly struggled with substance abuse issues, the singer knows firsthand how difficult it is to battle these demons. However, Demi also understands that the key to treating this disease is asking for help. The 27-year-old tells her followers, "If you or someone you know is struggling please know it's okay to ask for help."
On the one-year anniversary of Demi's nearly-fatal overdose, a source told E! News, "Her team is also a constant and always there for her and she loves them dearly. She has worked very hard to get back on her feet. She doesn't take anything for granted and wants to get the most out of every day and everything she does."