Some sad news for Demi Lovato over the weekend. Her biological father, Patrick Lovato has passed away. Her older sister Dallas Lovato tweeted on Saturday, Rest in peace daddy I love you. In response to the enormous amount of support Demi's mom, Dianna tweeted her gratitude along with a picture of the two girls with their dad. Though Demi was estranged from her father, she did show her thanks by tweeting everyone who reached out to her. On behalf of all of us here at CelebTV, our thoughts go out to Demi and her entire family.