No, they do not. I don't know when he's planning to tell them. They will initially go off on him, then--as Italian blood is thicker than water and he will lie--they will cut me off. This is what his brother and SIL have done. His parents aren't "normal" people; their world is very small, his dad is more narcissistic and childish even than H is, and his mom long ago surrendered any personality or will she has to her husband. I can't remember ever having had a real conversation with them. It's always 3 things: How's D, have I been busy at work, and did I work last night. I haven't worked nights for ~9 years. So I know where you're going with this, and believe me, I've considered talking with them but there would be absolutely nothing to be gained from it.
They will cut me off anyway; I've already lost my in-laws, and have asked that they always include D in family stuff because they are her only family. But my days of family holidays are over; I am grateful that we had them when D was little because she (and I) have wonderful memories.
M60 H52 D20 M14 yrs OW-old gf from 1986 bomb-5/18/08 H filed for D-9/10/08 D final 4/24/09 xH remarried (not OW) 2012