My 55 yo dad just said he hates living with my mom and Idk how to take it :(

My parents have been married for almost 27 years now and had been living a normal life. Ever since pandemic, my mom got a bit paranoid and overthinking about.. almost everything. She wouldn't go for therapy either.

Since I am living abroad and the two of them are alone, my dad grew more and more annoyed over the last few years and now he says he can't stand her anymore. A part of it is, I guess, aging as well. I love them so much and I am attached to them. It's so strange to see how they have changed from being an "ideal, happy couple" to hating each other.

I feel like I lost both of them and the good times I had with them growing up. I don't want them to be separated or divorced, cos I know for a matter of fact they won't be able to live alone separately - they just don't see how much they need each other. It feels so exhausting and I am longing for some peace of mind & a good night's sleep waking up the next morning without a baggage on my head :(