As life goes on, I realise that inaction and the unwillingness to reach out to others can be just as destructive as hurtful words, it's not a flaming rage destroying bridges, it's a slow and steady rain that slowly but surely erode at the bridges connecting people together until it breaks, I've lost many friends that way, in and off-line, because I wasn't there to chat with them or seemed like I hardly thought of them.
Do reach out to your friends if you can, check up on them, they might be going through something hard or sunk deep in a state of mind they can't get off from, even a simple hello will mean the world to them.