My wife and I have been together 11 years. Last year she wanted to explore ENM. I had a pretty tough time of being okay with it, but I came around. She had a girlfriend and we all got along quite well. Now that her relationship ended, my wife keeps bringing up the prospect of her dating a guy. I can’t. In fact, the one and only “rule” I had was no guys. I have nothing against men, but the thought of sex with a man or her having sex with a man repulses me...a LOT! I am 100% sure I couldn’t handle it. I don’t know how to get this across to her. She doesn’t understand why I am so adverse to the whole thing. I don’t understand it either to be honest. I have nothing against guys, but the sex thing is not okay with me. In addition, girls won’t get you pregnant! But it is way deeper than that for me. I'm pretty much mono, or at least think I am. The verdict is still out. I have no issue if she wants to date a woman again, but this guy thing scares me for my relationship. Any advice?