How soon should you meet the parents or introduce them to your parents?

I was just commenting on something about this and well I personally want to meet the parents early on, cause I believe it's a fact that you don't just bring someone home, unless you mean it.

So that way you can safe yourself time, cause I will say that anyone who doesn't want you to meet his family, has no good intentions. (Unless it's an exceptional case, with an awful ass family)

And personally I only introduced one person to my mom and my family and that was also really early on.
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Early one is for me within the first month actually, or at least the 2.
How soon should you meet the parents or introduce them to your parents?
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