Sometimes, you miss someone you shouldn't. Maybe someone said something that brought back a ton of memories for you. Maybe you found an old picture of you and the person together: a reminder of happier times. And you just miss them. You sit remembering them, and wondering if they even care about you. Then you realize you're no longer a part of their lives. They're happy without you. And deep down, you know you're happy without them too, but it still hurts. You still miss them.