First off: Try to act normal, if you yourself is not normal, don't be yourself. We like stereotypes, play that one out. If she likes a special stereotype (like jocks, bad-boys etc) you can try acting like one; as long as it isn't too far away from your own personality, then it becomes way to noticeable. If you're considered normal you might as well just be whoever you are, maybe train a little to boost your self-esteem.
Love is but a mere chemical reation and with the abstence of it you can just do some drugs. It's helping about half the world already. (no im not being completely serious here, in case someone didn't notice)
There's also kidnaping her and tying her up in your basement, i mean it's bound to work for some time.