I had two cats that were much like these two - always cuddling. They both made it to ripe old ages and made me very happy with their love and their care for each other. But one sickened and died after a few weeks of a terrible illness The other showed no signs of illness of any kind. One morning a week after my Seymour died, I found my Theo stone cold. I am certain he died of grief.
Your photos of them have made me both happy and sad. Thank you for making this post.