Why it is hard to say GOODBYE?

This is the big questions that will keep thinking if someone have to say goodbye, WHY? Why you have to say GOODBYE?

Well, I know some of you guys had experienced this already and right now, I am on this situation too! It is hard to imagine and keep thinking that someone have to say goodbye. I am in a relationship right now with the one I really started to love with all of I can. We've been all this time for almost for 7 months. Last night she said that we have to be apart for the mean time and the silence got on my mind. I felt that the whole world fall down on my face. I am very sad that time and suddenly tears came down from my eyes.

Why this is happening to me? its because I love her so much and I think I can't live without her. She's been my inspiration everyday. From the moment that I have to close my eyes before I sleep I see her face and when I woke.. there's a smile on my face that I see my loveone sleeping over me. I can't imagine life without that and I will miss that. There's so many things will happen and will miss, every moment that were together and now... it's all gone.. she have to go and I don't have any reason to say "Please Stay" its complicated now and I can't do anything with this..

I need space right now to be calm and think about it.. I hope I can handle this situation..