Okay, before I get to it.. Spelling mistakes: " I'M HEAR! I'M HEAR!" I think it should be " I'M HERE! I'M HERE!"
Next up, " Soon you forget I existence." It should be "Soon, you forget my existence."
Next up: " When than happens"
I'm not your English teacher, but I believe, that line should look as follows » "When that happens"
And finally, the last one I noticed: " I vade away."
I believe, that you mean " I fade away." Okay, well that would be the spelling, now to jump at the poem itself... I love it.
Keep writing.
I really like the tone of this poem and the way you've made it seem as though the person in it is screaming with all their might at you, and I love the way you changed the text and colour at the end to show how it's fading into invisibility. Very good :D (only thing I would suggest is a quick edit, for spellcheck purposes) - I'M HEAR should be I'm here (but well done on getting the apostraphe in the right place :), and it's probably and accident but vade away should be fade :) But it's an awesome poem