How long should I wait?

Am I really that patient to wait for someone who is already attached? How long can I wait? Its like I wish, I had a crystal ball to look to the future. I'm playing with a coin of 2 sides, hoping that I will get the side that I want.

Today, my teacher shared with me a story of how he got married with his wife. He was in the same situation as me (except that he is the one with 2 girls by his side). His wife, who was still dating him and the one waiting, finally said to him,"I can't wait for you anymore. I have to move on." This made my teacher realized how important she was to him.

I'm thinking, should I do that? Maybe, at the end of the year. I just want her to realise, that I am the one who can give her security, not him. But, when will she realise about this?

A close buddy of mine told me, given at my current situation, I should be happy and not be sad because I am with her most of the time. Yes, I do get jealous, but I can't help it. To think positive, think of what I have done with her, times we spent and so forth. I am praying that everything will turn out well.

I know my blog has been flooded with a lot of this kind of rubbish, but I can't help it. I am at my wits end and my pride has been crushed so badly. In a way, I asked for it. Love is blind, and, I don't know, how long more I can wait for her. All I can do, is just wait and build up this relationship, hoping it will blossom.