“And Just Like That…” the book is really truly “closed” on the saga that is Carrie Bradshaw.

“Party of One,” Thursday’s series finale of the “Sex and the City” spinoff really was the end of the road for the gals, their Cosmopolitans, men and Manolos, as showrunner Michael Patrick King told Variety.

“It is closed. Because I care so much about what we’ve done. … I never thought once about continuing,” insisted King, who directed the final bow, which Susan Fales-Hill co-wrote.

“Telling it like it is: It’s an instinct. Anyone else could keep going. I can’t,” said King, 70.

King similarly reached a natural conclusion with the 2004 “Sex and the City” finale: “We don’t just want to do it. We want to do it well, or do it when there’s something kind of dangerous and exciting to say.”

King and Carrie herself (Sarah Jessica Parker) announced in the midst of the show’s third season — ironically, its highest-rated — earlier this month that the franchise was “coming to an end.”

It was a shock, and in some cases, a relief, to viewers who’d held on through many an out-of-character antic or plotline and were finally enjoying themselves beyond the hate-watch.

“I always like the fact that you wish you were getting more. The idea of leaving a party while it’s still happening is the most elegant thing you can say for a TV series,” said King, whose sole rule for the writers’ room was “don’t repeat. And we’ve done a lot. The one thing we haven’t done was get Carrie to the point where she says, ‘Maybe I’m enough.'”

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