I've lost friendship with most my friends from high school and early years. It does happen in life -- friendships evolve and change over time. Friendships do take effort to maintain, however. I use Facebook for that reason. To send a quick message takes a minute, or to comment and like your friends' posts takes but a second or two. It lets them know you are still there and that you care.

The good news is you do have 4-5 friends you can rely on. That's more than many people have. So the plus or positive side is that at least you have these friends in your life. ((((Hugs)))))