If you're smart, you'll make no flirts or sexual advances in your first message. Women on these sites get bombarded constantly by guys trolling for booty, and will probably interpret anything with a remotely sexual message as more of the same. Don't even say ANYTHING about her appearance at all unless it's just to say she has a nice smile or something very innocuous. I have never gotten a response to a message where I said the girl was hot, cute, pretty, or any other variation thereof. Just say you liked her profile and you'd like to get to know her. Ask a question maybe about something you have in common, or what music she likes, or w/e.
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Self-Diagnosed Dec. 2010
135 Aspie, 65 NT--Aspie Quiz
AQ 40
BAPD--124 aloof, 88 rigid, 83 pragmatic
EQ/SQ--21/78--Extreme systematizing