Cant get her out of my head

My ex and I broke up a couple months ago. It seems like life will get better for a time and then I go back to having her on my mind constantly and its eating me up. I miss coming home to someone that cared for me and I cared for and now I come home to dead silence. The loneliness is killing me. I miss what I had with her and I feel like love is so far away now. All that love and care and time and memories down the drain. Any advice at all would be appreciated