If anybody asks, you haven't seen this cat

So we have the perfect cat. It often greets us in the morning, runs up to us when we arrive home from work, is very affectionate and will purr and be pet for an hour if we want.

And then it goes home. It lives three doors down. So we don't have the vet bills/angst, the food bills, the litter box aroma, it doesn't knock things off our dresser at 3 a.m. We just have the joy.

Problem is it seems to prefer us to its owner of late. It wants in our house. And it's often on our porch, ignoring said owner when owner calls. Owner has noticed. Perhaps feeding it sour cream was a mistake...