The next time a part-time friend asks why you don't call or text anymore, ask them when the last time they went out of their way to just check up on you, when the last time they thought of you and picked up the phone just to chat, or when was the last time they didn't just talk about themselves before finally getting around to asking about you. You are not a rug, stopped being walked on. Instead, throw on some boots and do the walking yourself.
Oh my I couldn't agree more. Why waste your time with someone that doesn't make time for you! Life is too short to give notice or time to those "sometimes friends". You are better than that. Get rid of those sitting on the edge of your friendship. They aren't worth your life breath! I think this goes for some family as well!