As a director/writer/producer, all you ever want is to work with actors who make you look better, who make the work you do seem as good as it can be and even better than it is.
I think quite a lot of people have a friendship or a love that's gone like that and it never quite reconciles properly.
I guess my feeling is is that if you're going to make a joke, that's fine, but you should also sort of stand behind it, you know? A joke should be more than a joke, it should be a point that you're trying to make.