The Batman Equation is great, but Batman is a sociopathic egomaniac. Totally not appropriate for Valentine's day. Send the Love Equation instead:

sqrt(cos(x))*cos(300x)+sqrt(abs(x))-0.7) *(4-x*x)^0.01, sqrt(6-x^2), -sqrt(6-x^2) from -4.5 to 4.5

The equation works just by pasting it into Google, but we're not tooootally sure it's accurate in real world math. Anyone got the math chops to confirm? [@Huckberry via Mashable via Roger Ebert]