It wouldn't surprise me if Miss V knew this was happening. In fact it would surprise me If she didn't! Don't assume anyone is "cheating". These folks have an open semi-swinger life-style in regards to sex. They have boundaries, of course, but every one of them, Dick, Jane, Miss V, has had sex in some form with, at the very least, two other people outside of their relationships and I think we can assume TKII has too.