Experiment with innocent touching

Touch his arm. Grab his elbow. God only knows how many (imaginary) fuzzies I've picked off of guys' clothing. The point is to get inside his personal space and make contact.

Feeling really brave? Brush "something" from his face, lip, ear... but use your middle and ring finger, not your index finger. Watch him melt.

When he's walking by, grab one finger of his hand and when he turns to you, look deeply into his eyes as he passes. Then, let go. if he's interested, he'll come back for another touch. Works every time.