Actor Peter Greene was my LO and now he’s dead. Not sure how to handle this - what have others in this situation done?

I had been actively working on distancing my thoughts, so even though it’s been over two weeks, I just found out last night. Also of course there is the sense that if somehow I could have actually had a relationship with him, I could have saved him, which I know sounds objectively nuts. But the feeling is still there and also a gaping hole where I previously had a pretty safe LO to manage stress. Open to advice.