Paula Patton, ex-wife of Robin Thicke, recently took to Instagram to express her heartfelt condolences over Alan Thicke's passing.

Patton dated Robin for 21 years and was married to him for nine years before she filed for divorce in October 2014 citing "irreconcilable differences." Although Patton says she's over Robin, she obviously still fondly remembers her former father-in-law and all the joy he brought to her life.

In a heartfelt post Patton wrote, "I knew Alan since I was 15 years old and he had a tremendous effect on my life. I loved and respected him so much. So many great memories and laughs together. We will miss him so much! His grandson is quite sure he is still here with us in spirit."

TMZ reported that Thicke had been playing hockey with son Carter on Dec. 13 when he suddenly suffered a heart attack and passed away later that afternoon in the hospital. He was 69 years old.