You cannot "force" her to do ANYTHING, skr. All you can do is let her know YOUR boundaries of personal integrity. Do you know what they are? Is "I will not live in an open marriage" one of them? Because that's surely what you have right now.
Or is it "I'm willing to live in an open marriage, so long as she's nice and affectionate with me, too?"
Starsky
This is a great boundary which WILL ensure your success with the ladies. With or without the wife. Women don't want to think they can run that crap on you unless you guys are swingers!