First, they vanish into the dating deep.

Then, months later, they’re back in your DMs — like nothing ever happened.

Welcome to the maddening world of “submarining” — a toxic, resurfacing trend where ghosters pop up from your past, acting like their sudden radio silence was no biggie. 4

“They want someone to talk to and make them feel good about themselves,” Gigi Engle, certified sex coach and author of “ All the F*cking Mistakes: A Guide to Sex, Love, and Life ,” previously told Men’s Health .

“It’s pretty unlikely that it’s because this person actually cares about you.”

They aren’t exactly rare, either. Submariners — also known as “zombie daters” — typically ghost without explanation, only to boomerang back into your life like nothing went wrong.

Think: “Hey, stranger” s

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