• You fascinate me more than the Fundamental Theorem of Calculus.
• Since distance equals velocity times time, let's let velocity and time approach infinity, because I want to go all the way with you.
• My love for you is like a concave up function because it is always increasing.
• Let's convert our potential energy to kinetic energy.
• Are you a differentiable function? Because I'd like to be tangent to your curves! (my favorite )
• Me and you would add up better than a Riemann sum.
• Why don't we measure the coefficient of static friction between me and you?
• Your body has the nicest arc length I've ever seen.
• I am equivalent to the Empty Set when you are not with me.
• How can I know so many hundreds of digits of pi and not the 9 digits of your phone number?
• I don’t like my current girlfriend. Mind if I do a you-substitution?
• I can figure out the square root of any number in less than 10 seconds. What? You don’t believe me? Well, then, let’s try it with your phone number.
• Your face has perfect, reflective symmetry
• You are one well-defined function
• I like the area bounded by your two curves.
  

Ha ha, use these at ur discretion.