Times have changed since Miss Monroe said those lines.

And, they are true to a point. We are not always good. We have bad days, and days where we are just down. And being in a relationship means you have to accept that about your partner.

However, today it has shifted to an excuse. When your default is to not be bad, cruel and unkind, then the line has meaning. But when you complaining at your best, and downright insulting at your worst, the line makes no sense.

Or maybe it does. But in a backwards way. If the person is not working on themselves, and their worst is really bad, then you should recognize that the "good side" they have been showing you when you first started dating was just a facade. And that their normal, good self lies somewhere between the two extremes you have seen. So, when they stop acting, you will be left with bad and worse, and should take the blinders from your eyes, and leave this person.