Super star Demi Lovato's father passes away over the weekend and CLevverTV has the detailed report. The 20 year old star's biological father, Patrick Lovato, died after a long battle with cancer, and Demi spoke out via twitter to confirm the sad news, thanking her fans, friends, family, and even complete strangers for their support. In the past, Demi has spoken out about not having contact with her father. Patrick Lovato, who was a sound engineer at one point, and Demi's mom, Dianna De La Garza, divorced in 1994. In 2009, the singer noted that they hadn't talked in 2 years, adding that QUOTE 'when somebody lets you down after you've been the only one there for them, and so many times, you don't know what else to do.' In 2011, Demi's father opened up about their strained relationship, and even publicly asked Demi to reach out to him, adding that he was so proud of everything she had accomplished at the time. The first confirmation of Mr. Lovato's death came when Demi's older sister Dallas Lovato tweeted out about her father's passing saying 'rest in peace daddy I love you.' Our condolences go out to Demi Lovato and her family during this difficult time. Other celebrities and friends shared condolences via the popular social media site, as well - and that full story can be seen by click the link in the info section below..