"They seemed to break or ruin everything:
•they broke our toilet
•they put a hole in the wall
•they allowed their toddler to eat spaghetti on our white sofa, it spilled everywhere and they just turned the cushion over.
•our bathroom lock broke clean off
•there was a giant gouge out of our new kitchen counter.
Obviously, we weren't there - we loaned our house to them while we were out of town. Also, I was not allowed to bring any of this up because it was my partners really good friend and he didn't want to compromise their relationship."
...the amount of ignorance in your comment speaks for itself.