SOME ADVISE, FEELING BIG PAIN?

I just come home from work and my ex girlfriend move all her stuff. It is so painfull. All we built all this time is gone. We were living together for almost 4 years. And everythig was nice. She decided to brake up. she said she wanted different things for her life. Now my apartment is so empty and no love around. This is so difficult to accept this happend to me.