Guys would you ask her again?

If I really like a woman then I will ask her when it is convenient such as when she isn't in a relationship with someone else. I learned to ask only a maximum of five times. The first is to catch the girl's attention, the second is to keep the interest, the third means I'm serious about wanting to go out with her, the fourth means I'm still trying and the fifth means this is your last chance to say yes. If the woman finally gives me a chance after I stop asking her out for a long time (let's say a month) then I reject her and simply say, "sorry I gave you five chance to go out with me, I'm moving on." Sounds mean but if the girl doesn't take the hint after the first 3 times then I'm just wasting my time by asking her out the last two times.