(once it's certain that (s)he is an aspie) "My exes all dumped me at the exact moment when the Essential Difference theory turned out to be true between us. I presume, that wouldn't be a problem with you."
"Hey, girl, have you got a trampolene? Mine's broken from too much jumping... can I borrow yours for the weekend?"
"Before any relationship could emerge between us, we've got to know each other. *hands out a piece of paper* This is my blog URL, what's yours?"
(T-shirt line) "Looking for female companion in the 299.0-299.80 code interval."
"Ordinary girls... you can find plenty of them. But me - that's a limited series model. Only 1 in 150 made."
"What's your blood group? I'm working on a major art project with body modification, and might need some refill."
(a cat lover line) "Turkish Van beats Ragdoll anytime, ain't it?"
"What's your favourite body part? Mine is the brain."
(of course, the classic one)"Are you on any kind of prescription medication?"
"You made your way to having a strong dispositional representation in my amygdala."
(not a line, but a story: when my best friends met IRL for the first time, the guy gave a book titled "Asperger Syndrome and Sexuality" to the girl... and they're going strong for almost 2 years now!
)
_________________
"...unless you have a morbid fear of dying."