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.
We rarely lose friends and lovers, we just gradually figure out who our real ones are. So when people walk away from you, let them go. Your destiny is never tied to anyone who leaves you. It doesn’t mean they are bad people