"there was this occasion where i went up to a worker and asked for her number infront of all her coworkers" -- Illusional

That all depends on the girl, but everyone will tell you that generally that's not a good idea. Some people don't like sudden changes like someone just coming up out of the blue and asking them out. If he thinks that this girl is worth it, then moves (gradual) such as applying for a job there could work. It might take longer, but it will be less drastic.

And to your stocker comment. If you are a stocker, you are a stocker, period. If you have intentions to stock someone, no matter how you approach getting close to them, you are still stocking them.