There's no way to sugar coat it, it sucks. Nothing hurts more than feeling like you are left out. Especially by people that you consider a "friend" or "buddy." I experienced this heavily during my early teens when I was still "in" because my family was considered bad association due to my brother getting into some legal trouble. My so called "buddies" in the hall stopped talking to me and ceased to invite me to gatherings. All because of something that was beyond my control. It was at that point that I realized that it wasn't really a friendship. It was all conditional.
This was honestly the biggest eye opener of my life and the catalyst for me leaving the organization right before I was about to get baptized. And thank goodness for that!