I will agree that we need time to grieve and mourn, but it is not time that does the job of healing. If we do not do the necessary grief work (accepting the reality of the loss, experiencing the pain, making the necessary adjustments and creating meaning from the loss), we will end up with what Alan Wolfelt calls "carried grief." Carried grief is when you do not mourn your loss and take the pain with you into everyday of your life.
You are living out one of most people’s greatest fear. This is why some of your closest friends or family might be acting standoffish or even disappear. They don’t mean to be mean or neglectful, but it doesn’t hurt any less. Many times they want to be there for you but simply don’t know how. However, if you let them, there are people in your life who can be there for you, champion you, stand by you and will not be afraid to talk about this or go through this fully with you.