As someone who has not taken the plunge yet but readily trying to get my wife there, I have had thoughts of jealously that stem from the idea of her having fun without me having fun too, meaning that she is getting off by fucking another guy, without me getting someone else too. Im more of a stag than a cuck... confusing... but after thinking about it I realize it's not really about me, it's about her getting what she wants and even needs/loves - another guys dick. And that's enough for me to put aside any jealously because I love seeing her happy and I would love to see her riding another guy. To be fair, however, we are writing the rules as we go along.