I don't really know what I hope to achieve by posting this, there's nothing I can do, but my parents relationship seems to have taken a really bad turn for the worst. They never really had much in common as far as I could see ( apart from us)- they had an arranged marriage and met about a month before marrying. My youngest sibling moved out a few years ago, and since then they have got more and more distant. Now, just after their 40th wedding anniversary, it seems to have descended into barely disguised contempt. They came round to mine to see the DCs and it seemed as if they had not spoken at all, even though they live in the same house. They barely spoke to each other in my house. My DH said they might be better splitting up, but what's the point? They live as far as I can see in different parts of the same house anyway. They are also quite religious, so won't do it. I'm not sure how to handle it, if at all, or just ignore it. My siblings aren't really the type to chat about things like that, so I just wanted to write it down really. 