Hey guys.
My story is there is this girl that catches the same bus to her work that I catch every Monday.
She is really cute and I got her Facebook. About was 5-6 months ago. We Did not talk scince but we have good relation. And at first I only thought of her as a cool friend but over the months I became attracted to her. But thing is I do not think we are gonna meet again on the bus because I am chaninging work.
I thought if talking to her in Facebook but I thought it would be weird just talking to her and asking her for a date.
I never chatted with her on Facebook.

So what do u think I should do?

You are in a situation where you have a true time constraint - that you risk never meeting her again. In such situations you need use it to your advantage and be very direct. And yes, this means that you need to ask her out. You could say/text something like:

- Hi, I'm changing job, so we will probably never meet on the bus again. [Here you can insert anything like "I think it's kind of sad" or something]. How about having a cup of coffee sometime? Maybe on [insert day here]?

Easy as that! Now she can answer yes, no or "well, I'm busy that day". Yes means yes, and no means no. However, if she is "busy", it may mean either yes or no, depending on whether she is trying to find a solution (booking another day).