Losing something that someone else let you borrow is often seen as very disrespectful and careless so it would make sense for someone to feel terrible after losing something that wasn't even theirs to begin with
Consider the statement "A friend let me borrow some of his old headphones and now I have lost them.". Is the statement "A friend let me borrow his old headphones and now I feel terrible that I lost them" false? Yes/no/unknown