I am now 22.I has a neighbor friend since kids. But she studied in city English medium school, I studied in village Bengali medium school. She was hot, smart. I fall love with her. I make friendship with her, and started go to her house. Her parents loves me. When I ask her to help in English she passionately help me. She came to my house many times with good looking. When our secondary exam going on she fall sick badly, but my parents kept secret until my exam finish. Now I am studying engineering. I rather go to house and her house too. But I cannot tell her that how much I love her. Because I wanted to make my carrier first .

Recently when I am drank I proposed her on Facebook. She replied me "Just go & study” . The she post in page that she fill " Feeling yellow!!
I'm confused inside (♥) a little... hazy but mellow... " . I ask her why she post that , she replied ""Datz nt mnt 4 u. N y do u thnk dat i wud update my status 4 u? Doz lines r 4m a sng called "colorblind".

After that she is not chatting in Facebook with me. But I want her any cost in my live. If she loves me. What should I do? Please suggest...

She is being kind. You proposed to her and she took it seriously (which it is, drunk or not) and is backing away for your sake.
It's not clear what the song 'colorblind' has to do with this. Maybe you are from different cultures and religions and her family expects to arrange her marriage? I don't know. You tell us.
Finishing school while in love with someone who won't even contact you is very tough. Try to have a social life, clubs, hobbies, extra courses, volunteer, whatever it takes to take your mind off her.
If you connect again someday, it will have to be her contacting you.
Just treasure what you had so far.

I don't think she is in love with you the same way you are, and a drunk proposal isn't going to help at all. You better be happy with JUST friends, and don't push for more, if you want her to stay in your life. FORGET romance, just plain for get it.

She knows what you want from her, and she is nicely as she can rejected your offer. Take the hint seriously, despite your disappointment. You have no chance for romance, so don't ruin the friendship by pressuring her. Back off for a while.