oh jesus i just saw this no clue how long ago you sent this im so sorry.
i think that process of loosing connection with people that you were once close with is a natural and important part of life. everybody changes thus their relationships with people change too and thats good and okay. most people fade away from your life as time goes on. even the people who used to influence our life greatly are once going to leave it. i think you can do nothing about it. if you think somebody is really special to you i encourage you to do everything you can too have a strong connection with them, but if something hasnt worked out i think you need to forget them. well not forget, but rather understand that they were in your life for a reason and cherish the moments you had with them, but not obsess with the fact they are gone, because thats just the way it is. you had a nice (or not so nice but teaching) experience with them and thats good enough. if they are meant to be involved in your life they will show up again. but if not just be happy you had your time with them, try to move forward and find new people who fill you with joy.