Most of the lines are pretty good but it does not really flow well. In the first few lines you give a feeling that you are lost after loosing your beloved. Then you say that you are waiting for your beloved. Then again you end saying that I have learned to love without it it. The last line gives a feeling that it was your fault as you could not understand your beloved.

I think you just have to arrange the lines so that it flows smoothly
Oh ya...this line doesn't fit well : tujhe chahne ke baad kuch badal sa gaya hoon

Nice effort