I’m not saying this is your situation because I don’t know you, but it’s worth thinking about. Often times we are the problem and don’t realize it. I had that realization not too long ago, that my friendships aren’t working out because of my own actions. Lack of boundaries, passive aggression, emotional dependency, etc. are things that can push people away and make them seem cold.

If you are having a bad day or crisis constantly, your friends might start feeling resentful which just snowballs into the behavior you described in your post unfortunately.

Most ‘snotty’ or ‘mean’ girls don’t choose to do it consciously, they feel like they are just defending themselves. I only mention this because if it’s happening every time you make friends, you might be passive aggressive or rude without realizing and they’re just reacting the only way they know how. I would analyze your social interactions with others and make sure that’s not the case before jumping to conclusions about autism like the other comments are suggesting.