Lambert Mason playing British playwright "Felix Webb" is the other main guy. He's an adulterer and one who gets caught up with his mistress demanding things. It's the usual story of the younger mistress demanding the older man can his wife and settle down with her. Yawn! How many times have we seen that?
It winds up being a soap opera about so-and-so fooling around with people they shouldn't, observers seeing all of this and putting their two cents in, and .......well, I might as well not spoil it for anyone who likes this sort of thing.
The main problem with the movie, in my opinion and in a nutshell, was that it was boring and it had too many characters one simply doesn't care about. Add those two negatives up and a you get a "not recommended" film.