I loved the ending which was unexpected. I think that "seems" would have worked better then "seem". I also find it interesting that you stopped using end-rhyme at the middle of the piece. Also the whole piece seems to be couplets strung together. With this poem, it works. I also think that stopping the end rhyme added to it in a way. I do wish you would have changed the line "Which always get hurt" to something different. However it works :) The whole thing is amazing, and hopeful. These are just some nit-picks. I enjoyed reading it!
Actually, dreams are part of your brain, technically. Have you taken psyche yet? The dreamscape is pretty interesting. And I'm fairly certain you mean "the heart"? Otherwise it's a little uncomfortable. The second and third stanzas blow me to pieces everytime I read it.
Just as love seems to never last, pain also is a fleeting deer, it too shall find it's path
back to happiness the only thing we can do about the past is accept it. lovely write :)