First of all, let me preface by saying that if you’re in a serious relationship with someone, it is never a good idea to keep in contact with any of your exes, no matter how friendly or harmless you think it is. Your girlfriend/boyfriend will say they trust you, but in reality, it will give them endless opportunities to accuse you of being unfaithful. And God forbid you turn down one of their advances, they become bitter and tell all your friends that you guys “totally hooked up.” It WILL …