Happy Valentine’s Day - Nerd Edition

Try googling this today:
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
Happy Valentine’s Day folks!

(Or, as some of us like to call it, Happy Singles Awareness Day!)

[function courtesy Wolfram Alpha, I believe. Though we learned about cardioids in grade 12 if I’m not mistaken.]

Your love will keep me warm: Tauntaun valentine