The Die Hard star's loved ones announced on Thursday that he had been diagnosed with FTD and celebrities reacted to the sad health news on social media. In the comments underneath Bruce's daughter Rumer Willis' Instagram post, Aaron wrote: "Love you so much my friend! Sending hugs to you and that beautiful family of yours. Your pops is such a damn legend." Meanwhile, Bonnie Hunt wrote on Instagram: "An abundance of love for you dear Demi, for Bruce, for all of you, family. So much love”.