['I had to put my cat to sleep last week. It was so hard.', "Oh my God, that's horrible. I'm really sorry to hear that. I hope you're doing okay.", "I'm so heartbroken! He was old, sick and in pain, so it was time. It doesn't make it easier though!"]
Nothing can really replace a loved pet you had for a long time, all you have is memories really.
I had to put my cat to sleep last week. He was old, sick and in pain so it was time. I am still so heartbroken, though.