"AND RELIVE THOSE TIME AGAIN.
WHY DOES LIFE GO BY SO FAST?
WHY CANT MOMENTS STAY AND LAST?"

This is pretty good, I liked what you wrote. But first off, don't put your poem in caps, it's so much harder to read, just write it normally. Second, "cant" should be "can't".
Thirdly, "time" in the first line up there, should be "times". Otherwise, this poem is good, but I think you can go back and work on parts of it. Keep writing, always and forever...