Yes everything is changed..
you me and our relation.
The smile i had has changed...
from flirtatious to simply mean i'm okay.
The look you gave me has changed..
from you are mine to it doesn't value anymore.

Yes everything has  changed..
you me and our world.
The voice has changed...
from humble and lovely to rude talking.
The caring guy to a possessive person..
Yes the behavior is changed .

Yes everything has changed..
but this changed has made something major missing.