Strategy

Voodoo aside, from what I keep hearing, it's really not hard to get a guy to love you.
That is,
1) If you spend alot of time with him
2) If he sees you as the only possibility of romance on the horizon.

With these 2 factors combined, chances are, it will happen.
Guys are easy like that.

As for girls, I dunno...but I do think there is more to the formula for them. It's much harder to change their minds once you don't interest them in that way early enough.