uy! forgot a tip!
I have noticed that men in general, science dorks in particular and don't get me started on engineers, work better in binary. so when flirting or asking them out, ask questions so that they can only answer YES or NO. otherwise they get nervous and babble. cute little things haha. better yet, just state instead of asking, something like "hi! I wanna take u out, show u a good time! I wanna hear all about what interests u".
nobody takes friendliness in a bad way.