This is the surest sign that you are ready to move on with your life. If you have been bereaved it is a matter of making sure you have had enough time to go through the grieving process and all that involves. There is no right way to grieve and you might find yourself going through lots of different emotions including anger and denial before you finally get to a place of acceptance. Acceptance means that you know deep in your heart that your loved one is gone and is never coming back and you will begin to be able to visualise a future for yourself with someone else without it feeling like a betrayal of their memory.