I think it was a cop out. The blob seems to be a drama queen and by the jist of the conversation it seems as if the bloke was aware of Fat Man's explosive nature. He was just trying to diffuse the situation by shifting blame and avoid Nagasaki #2, to no avail. Additionally, I believe that while in a monogamous relationship, one should avoid situations that would make their partner uncomfortable. Like drinking alcohol alone with someone from the opposite sex who has a clear interest in them. It shouldn't get to the point where one partner feels like they can try and dictate who the other can and can not see. Why be with someone if you're unable to trust them in making such a simple decision with severe consequences?