TWO is the first of the female numbers. Mind you, femaleness in numerology (and symbology in general) signifies wickedness and a general sense of evil. This probably has something to do with Eve, but in the strictly numbers sense, it is because two is the first split from the unity of one. Two is, literally, the Devil and the fall from grace.

For clarification, all even numbers are female and all odd numbers are male in numerology. Not all the even numbers are bad signs; that depends on how they relate to the rest of the numbers.

Two, however, is pretty fucking evil. It is the number of the Devil; the opposite of Unity and God. Doing things twice was often considered bad luck. The characteristics allotted to "two people" are strictly feminine ones: Softness, sweetness, persuasion, deceit, and seduction, as well as general passivity. Keep in mind, though, two is as necessary to the Universe as one and three...