This news follows an interview 41-year-old Shepard gave with Playboy magazine, where he uncovered the extent to his addiction.
Speaking previously, he said: "I just loved to get f****d up - drinking, cocaine, opiates, marijuana, diet pills, pain pills, everything. Mostly my love was Jack Daniel's and cocaine.
"I was famous for going out on Thursday night to have a couple of beers, and that just led all the way to Saturday night...I lived for going down the rabbit hole of meeting weird people. Of course, come Monday I would be tallying up all the different situations, and each one was progressively more dangerous. I got lucky in that I didn't go to jail."
Meanwhile, Bell has revealed she has had to work hard at her marriage, which isn't always as perfect as it may seem.
Speaking previously, she explained: "I need to remind people that you don't just find one person and then it's all peaches and cream for the rest of your life. Marriage and a relationship is hard work, and it's a lot of compromise. But if you compromise a lot, it's worth it."