There are a LOT of ways you can flirt that DON'T REQUIRE WORDS.
If a woman looks at you and raises one eyebrow, look back at her and do the same... only exaggerate it.
If a woman puts her hand on your arm, look down at it, then look up at her in a surprised way, then raise your eyebrows as if you just had a major "ah ha!" realization... then start smiling and nodding your head as if you just realized that she wants you. This is a powerful combination because it's funny, and it exaggerates the meaning in her touching you.
There are a MILLION ways to flirt like this, but the point that I'm trying to make is that you NEED TO START DOING IT RIGHT FROM THE BEGINNING OF YOUR INTERACTIONS WITH WOMEN.
FIVE WAYS TO SPARK THE CHEMISTRY BY FLIRTING
1. Giving her a hard time about something in a flirty way. In person, when responding to her personal ad, etc.
2. Mentioning how the relationship just doesn't seem to be working.
3. Faking despair at something she's doing... shaking your head and exhaling.
4. Overly dramatic complaints about her job performance, behavior, difficultness, etc.
5. Behaving like you could take her or leave her... and like she's just a good friend (too comfortable)... unlike all the other men who communicate that they're awed and in Wussville because they're INTERESTED