i used to get attracted with me, and even until now.. i still do. but then i fell deeply in love with this woman,,, and i dont know why i find her very unique. when i look at other girls, i dont find them appealing at all. T_T what is going with me?
in our culture, girls in relationship with girls is a big no no and i have so many troubles because... i dont know how am i suppose to be with her??

It's really up to you. If you want to be with her, find out her sexual orientation first then ask her out or get to know her. As for your culture, that's a tricky one, you could go out in secret maybe.

we're already going out.. its just i dont know how to tell my parents about it.. i dont want to upset them and all...

It's really up to you to decide whether or not your parents love you enough to accept you for who you are.
It can be tricky - I've known people who have gotten kicked out of their homes after they revealed their sexual orientation to their family. It's horrible.
And if you decide to keep the relationship a secret, this will create a problem with you and your partner over time. She may feel under appreciated. She would probably suggest that you do tell your parents at some point.
I would talk to her and see what she says.

Personally, I think it's harder to hide it and if you are not comfortable for standing up for yourself then you really should not be in the relationship. I'm huge into gay rights and firmly believe that you should not be afraid of who you are. If other people don't like it then too bad for then. No one should tell you who you can and can not love. If you really feel that your parents will kick you out, there are groups that can and will help you in the gay community depending on what area you are from.

I think Mystic has the right idea: in the long run, the best thing to do is be open about your feelings for this person, even if the consequences are painful. Are there any local support groups that you can talk to about this?

Another option is to just keep it secret for now, pretend that you're simply good friends in public, and wait until you can move to a place where the relationship (or another one with another girl, for such is life and few of us are lucky to meet The One the first time) will be more accepted.

You don't even have to tell anyone, but it's best too, since those kinds of things are hard to hide for long anyway.It might be best to keep it secret for now and tell everyone when both of you are ready.

Well you don't have to tell them if you don't want to, but if you choose to be careful how you go about it.