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I have many experience in dating couples. But I do not have it now, since I am married and in a committed monogamous relationship. Many people ask me if I ever missed swinger lifestyle, I would say no. Having threesome hookup is an amazing experience, but only when you both agree to do so. If not, it isn't. It is like a disaster. My point is if you are going to establish an open relationship, it should be established by both of you.