Genealogy Chat

I thought I'd tie up some loose ends on the more distant branches of my family tree and using all the usual publicly available records I discovered the story of a couple who died 65 years ago leaving a large family of orphaned children. I made contact with one of them, a man who was an infant when his parents died. He was adopted and it wasn't until he reached adulthood that he discovered his early history. My problem is this. I corresponded with him and sent him everything I know, but now he keeps phoning me and wants to meet up to talk about his lost parents. He seems obsessed with the gruesome details of their deaths and resentful that his older siblings kept the truth from him. Although I've told him I only know what I've got from the public record he still keeps on at me. I don't want to hurt him because it is obviously something that this poor old fellow has carried all his life. What should I do? If I meet up with him I know it won't stop there. I feel responsible that I've opened this can of worms.