"Whats new in the wonderful world of you?" (attraction)
"Thinking of you. (and taking cold showers) =D" (attraction/comfort)
I use more "multiple liners"..
"So are u in love with me yet?

"
typical response: "its only been 1 day!!"
"wow ur lasting longer than i thought... =D"
--- worse response "nope" lol (use in comfort only -- dont use this in attraction)
"hey i need ur help i have a problem.."
typical response: "whats up?" or "with what?"
"i desperately want to make love to a school boy... do u know any? =D" (attraction)
It really depends on the girl and what stage ur in with her.