Ahhhh. I understand. Perhaps you see it as a failure on your part. But...it has nothing to do with you. That other person is seeking something. And they are seeking something from you that you don't want to give. You're not the right person to give that thing to them. And perhaps that person might see you as inadequate or any other assortment of negative labels. But that's THEM. You are not who they define you as. You're learning to respect and value yourself (that's what setting boundaries is about). And that's great, because you sound like you are learning a very valuable thing at a fairly young age. Many don't figure this out until they are much older. And some people never figure it out. Understanding all of this, right now, makes you strong, independent thinking, reflective and many other good things. And you are loving yourself enough to do this. It's far from inadequate.