As OK! previously reported, the action star celebrated his 68th birthday with his family amid the devastating diagnosis.
In the sweet videos, Demi Moore, who was previously married to the Die Hard alum, and their daughters, Rumer, 34, Scout, 31, and Tallulah, 29, in addition to Emma and their daughters Mabel, 10, and Evelyn, 8, sang and ate some cake with Bruce.
“Happy birthday, BW! So glad we could celebrate you today. Love you and love our family. Thank you to everyone for the love and warm wishes — we all feel them,” the Ghost star wrote in a sweet post.