I have some Math pick up lines  

Are you the square root of 2? because I feel irrational when I'm around you 
Your hottness is the only reason we can't reach absolute zero 
If I'm the Riemann zeta function, you must be s=1. 
If I went binary, you would be the 1 for me. 
Baby, you're body is like a hyperbola 
I 1-sin(theta) you 

You must be the square root of -1 because you can't be real.