This isn't the typical approach anxiety, or being afraid of getting rejected after an approach thread.

I've been recently having a recurring pattern where I'll go on a date with a girl and suddenly she'll go completely radio silent on me.

For some reason whenever a girl completely ignores me the uncertainty and lack of closure causes great emotional instability in me and I freak out.

I start to get anxious, I think about my game and analyze it, I begin to get depressed, I even get bothered a lot and start to wonder why she ignored me. I'm not sure why this bothers me so much. Often, I'm not even interested or attracted to the girl, I'm not even attached to her but her ignoring me really causes me anxiety and GREAT sadness, I get lonely too.

Why does this keep happening and how do I stop it?