The music manager passed away on January 14, 2016 after a battle with throat cancer, and exactly one year later, the 48-year-old singer posted a touching video on Facebook to celebrate his life.
She captioned the video: "It’s been a year since René left us. He will always be in our hearts."
The footage started with a picture of René, 73, as a baby and ended with him receiving a kiss from Celine.
René had six children; Patrick, 48, from his first marriage to Denyse Duquette; Jean Pierre, 42, and Anne Marie, 39, from his second marriage to Anne Renée; and René-Charles, 15, and twins Nelson and Eddy, six, with Celine.
And Celine admitted that René's battle with cancer was tough for the entire family.
She said: "Before he left, it was very, very difficult for all of us. For me especially, and my children, to see the man of my life die a little bit more every day.
And when he left, it was kind of a relief for me that the man that I love, the only man that I kissed, the only man that I loved - yeah, I never kissed another man in my life.
So, when he stopped suffering, I said to myself, 'He's OK. And he deserves not to suffer.'"