I can completely empathize with you as well. It's so hard to go from having somebody around all the time to talk with, laugh with, snuggle with and just BE with to having no one at all to share the special moments with. The one thing I miss the most is accomplishing something at work and not having my stbx there to share it with him. He was the first person I told things to so it makes it hard during those special moments to not be able to share it with him.

It takes a lot of time to get comfortable again with being alone and not lonely. It's gotten a little easier for me although I do have my days as well. Just know that although you feel lonely, you are not alone in this feeling and it will get better.