Cucks, Kissing or no kissing?

We actually have no boundaries for any of this. My wife is able to do whatever she likes with her lover. She wouldn't want it any other way. I have no issue with her kissing. She always kisses her lover when he arrives and I think it's hot. Seeing my wife kiss her lover is part of the experience of me knowing that my wife is being taken care of. She told me that it wouldn't be the same experience if she couldn't kiss him while they were making love.