The Torah tells us (Vayikra 18:19), "Love your fellow Jew as yourself, I am G-d." The Talmud [Avos DeRebbi Noson, chapter 16] makes an intriguing point about this verse. Why add, "I am G-d?" Isn't the message to love the next Jew clear enough, complete enough? The reason that we have to love the other is because he or she is Hashem's creation, a neshama (soul) of infinite worth, created in the image of G-d, a chelek Eloka mi'ma'al (a portion of G-dliness from above). The answer to why the Torah adds "I am G-d" is to convey that "I am G-d Who created the other person." You are not merely to mindlessly or mechanically "love" some lump of clay that talks. You are commanded to recognize and appreciate who you are loving and WHOSE CREATION you are loving - and to fulfill the high behavior standards and obligations that this imposes on you at all times. This is said of your responsibility to every Jew. For your "better half" how much moreso!"