Whether it is an almond-stuffed olive, a slice of cheese, a sweet potato chip or a sautéed mushroom, it is important to utter the appropriate "yoikes!" when stealing tidbits from ones spouse. Really, it makes it all okay.
In case you have not been engaging in this behaviour (in which case, are you even human?!), let me just tell you that nothing tastes so good as the pilfered bite.