Falling in love on an airplane is the kind of story you only ever hear in a bar or see in a Lifetime movie.

But for a brief time this winter, Delta Air Lines wanted to help passengers make it a reality — by gently nudging them to hit on other passengers.

With cocktail napkins.

“Be a little old school,” said the small print on the napkin, advertising Diet Coke. “Write down your number & give it to your plane crush. You never know ...”

There was a little space on the napkin where flirtatious passengers could write down their name and another space for their number.

The larger print said, “because you’re on a plane full of interesting people and hey,” again, “... you never know.”

But while some found the napkins clever and charming, others thought they were creepy.

In fact, evidently enough complained that Delta and Coca-Cola apologized for the marketing stunt Wednesday, saying the napkins have since been removed from flights.

“We rotate Coke products regularly as part of our brand partnership, but missed the mark with this one,” Delta said in a statement to The Washington Post and other news outlets. “We are sorry for that and began removing the napkins from our aircraft in January.”

Coca-Cola also said in a statement to The Post, “We sincerely apologize to anyone we may have offended,” adding that the napkins are being replaced with other designs.

The ill-conceived napkins are the latest ad campaign to stir complaints on social media after marketers were accused of being inappropriate, racist or sexist.