Sandra Bullock’s longtime partner Bryan Randall died over the weekend, his family revealed in a statement to PEOPLE on Monday. He was 57.

“It is with great sadness that we share that on Aug. 5, Bryan Randall passed away peacefully after a three-year battle with ALS,” his family shared. “Bryan chose early to keep his journey with ALS private and those of us who cared for him did our best to honor his request.”

“We are immensely grateful to the tireless doctors who navigated the landscape of this illness with us and to the astounding nurses who became our roommates, often sacrificing their own families to be with ours,” his family added.

“At this time we ask for privacy to grieve and to come to terms with the impossibility of saying goodbye to Bryan,” the statement concluded, signed, “His Loving Family.Bullock, 59, first met Randall, a model-turned-photographer, when he photographed her son Louis’s birthday in January 2015. They took their relationship more public later that year, including an appearance at Jennifer Aniston and Justin Theroux’s wedding. READ MORE