Talk of a Valentine's Day episode of the Big Bang Theory led to the idea of what type of Valentine Sheldon would send to Amy, so I gave it a shot. First "Fan Fiction" type of thing I have ever written. Hope it amuses.
Dear Amy,
Like the excitation of a crystal that characteristically absorbs a photon of a certain frequency and emits two photons of half the original frequency, we are strongly correlated in a quantum entanglement that creates a tactile arterial palpation in the cardiac cycle of my myogenic muscular organ.
Love,
Sheldon
PS. Sorry to get all mushy.