Man I am reading this and trying not to be mad, but I will respond objectively. Not to rub salt in a wound, but I'm one for hard truths. There is always a risk of all sorts of endings when you either get into or bring someone you love into a sitch that involves a third party sexually. Now, there is no going back because you can't put the milk back into the bottle, so all you can do now is prepare. Si Vis Pacem Para Bellum. Let me ask you this please. What is more important to you right now and for the future especially if he is yours? Do you want to be a cuck or not? I'm not saying either is bad for him, but you need to decide what kind *******, and more importantly what kind of man you want him to emulate. Those concerns you mentioned, if they mean that much to you then, I hate to say it, it's time to man up and handle it. Because when it's all said and done, you have to live with YOU. When you translate what I wrote, you will see what I mean, so I repeat, Si Vis Pacem Para Bellum.