Three months of not feeling anything is a relatively short time-period considering you all have been together for 3 years. Just be sure you are positive in your choice because once you make that final decision, it's really hard to turn back.
Honestly - PDM's suggestion on remembering how much you loved him isn't a bad one. When I separated from my husband at first I wanted absolutely nothing to do with him... BUT when I moved out, I took all our old photo albums, all the old letters he had written me, all those old memories. It hurt when I first started looking at them because I thought I wanted nothing to do with those memories, I thought I wanted to forget all that time I had spent with him. It might not hurt to think about those times again even though you say it doesn't help.
I do have a question for you - you say you hurt... where does it hurt? and why does it hurt?
