I would like to ask for meaning of the two following sentence, and whether or not is the grammar correct. Please check my suggestions both "sentences" and meanings.
"I wish I never met you." - I met you just now but I do not want to meet you at all (from now to the future). So I wish not to meet you in the future anymore.
"I wish I would have never met you." - I regret the day when I have met you. It has happened very long time ago. It was mistake and I regret the fact that I know you.