Girls = Evil

I am going to prove mathematically that girls are evil.
We all know that girls require time and money.

Therefore,
Girls = Time x Money
And we know that time IS money.

So,
Girls = Money x Money
Girls = Money*2

It is known that money is the root of all evil.

Thus,
Money*2 = √Evil
Money = Evil

Hence, we are forced to conclude that
Girls = Evil