Nunca te conocí.
I met you = Te conocí
se conocieron
Le encontré ayer
"Cómo conocí tu madre."
conocerse.Nos conocimos ayer = We met yesterday.La conoci a una fiesta = I met her at a party.
nunca
Never hurt me = Nunca me lastimes
acabo de encontrar acabo de conocer
Da igual.
Nunca diré.
A veces me arrepiento nunca haberte conocido (I think this means 'Sometimes I regret NEVER having met you'; and the question saying '....EVER....', you would use the same sentence minus 'nunca', since the meaning is 'Sometimes I regret having met you', the 'ever' merely a reinforcer).
it won't let you say them because they are 'inappropriate"