Ok, don't take this wrong. I'm rooting for you. But there's the red flag.

He said something that's a common expression, "taken", which is used for both men and women. It was clearly intended to be a compliment.

You chose an unlikely interpretation that clearly didn't match intent or common usage and decided to get offended about it.

After all your self description, I was wondering "how is she single?"

Right there, now I understand. I'd be out the door. Someone that is looking HARD for ways to be offended is not relationship material.

Think about your need to assign your meanings to other people's words. Maybe talk to a professional. This one thing can sink you.

Good luck!