One of the best things I've learned is if people want to be in your life, they will be. People say things so loud with their actions, and it sounds to me like this person is saying without saying what they feel. Protect your peace. We only get so much time to be here, and if people show they don't want to be in your life, don't keep hurting yourself.
None of that stops the hurt you feel for the loss of someone you consider important to you, so on that point I'm sorry you're going through this. It never feels nice to lose a friend.