I will never stop asking cute guys who are not redheads but have a discernible glint of red in their arm hair if they are surprise ginger pubes.

I think it’s useful to distinguish between “painfully shy” and “introverted.” “Painfully shy” is wanting to interact with people and feeling uncomfortable and/or insecure in your inability to do so. “Introverted” is being ok with not wanting to interact with people.