If the Greek god Zeus could be compared to the number 1, then his wife and sister Hera would represent the number 2. And like Hera, the number 2 is jealous and mean-spirited when other forces reach for her man. Because as gentle and loving as she is most of the time, her anger is formidable and another side of her comes out when she feels crossed or mistreated -- a side that can be mean and vengeful, cruel and unrelenting. She will claw her adversary to pieces and never look back in regret or remorse. What is hers is hers, and you are well-advised to remember that, as many Greek gods and half-gods found out the hard way.
As a partner, the number 2 is an invaluable asset. She will defend you at any cost and her loyalty is unshakeable. However, she is emotional and demanding, and expects to be treated like a princess. She is devoted to you, but she also expects you to be devoted to her. At times, she is a true drama queen, and when that happens you may know for sure that you have not paid enough attention lately. She is not particularly materialistic, but if you don't show up with gifts or flowers every once in a while, she will let you know in no uncertain terms that you are not measuring up. She will throw the occasional tantrum, but if you respond with love and attention she will make it up to you in proper fashion.
In short, the number 2 is a sensual, graceful, loyal partner who can be a bit demanding, but is worth the trouble. And there is another important aspect to the number 2. As the most intuitive of all single-digit numbers, she is drawn to the occult (only the double-digit 11 surpasses her in that department). However, the real value of her intuitive prowess is in the way she interacts with others; it is the true basis of her tact and understanding. Like a good politician, which she can certainly be if needed, she often understands the true motivations of others better than they do, and her clarity and her powers of observation often help others to understand themselves better.
On top of her jealousy, her vengeful nature when she feels mistreated and her cruelty when punishing adversaries, the 2 can also be critical and verbally abusive. Her ability to pout and sulk, her bouts of bad temper for trivial reasons and her extended periods of indifference can drive any sane person crazy. On top of that, she is capable of displaying the most illogical reasoning, and a verbal argument can feel like trying to slice water with a knife; nothing you say seems to have any effect. Generally, the best thing to do when a 2 behaves like that is to get out of her way for a while -- and then reappear with a big bouquet of flowers, and smile like nothing ever happened.