Still not over him after 4 months

We were together for 3 years and 5 months. We lived together for 3 years. He was my best friend , my world , my everything….I have tried everything.. I went no contact.. keeping myself busy..spending time with friends…going to gym…depression and feelings are not as strong as 4 months ago. I could go on without having a mental breakdown. But everything still reminds me of him and deep down I am not over him. Is something wrong with me? My family and friends are prolly sick of me being in this constant state for months.