Lopez’s “biggest miscalculation here is that she thinks the world is still interested in Ben and Jennifer’s love story,” her former publicist said.Getty Images for iHeartRadio

Ben Affleck is Jennifer Lopez’s “Achilles heel.”

That’s why her former publicist, Rob Shuter, believes the singer’s first album in 10 years is a flop — “This Is Me…Now” debuted at a paltry No. 38 when it was released in February, before it quickly dropped off the Billboard 200 and sank without a ripple.

“Jennifer’s always been a marketing and PR genius but her biggest miscalculation here is that she thinks the world is still interested in Ben and Jennifer’s love story,” Shuter told The Post. “But no one cares about Bennifer anymore. The world has moved on.”

J. Lo’s former publicist Rob Shuter told The Post that Affleck is her “Achilles heel.”Golden Globes 2024 via Getty Images

Despite adding three additional concerts in Miami, Toronto and New York in February, a number of dates on Lopez’s forthcoming tour were recently cut.MEGA

Not only has the album been a failure so far, but she’s had to cancel concerts.

A number of dates — including in Nashville, New Orleans and Houston — on Lopez’s tour, her first tour in five years, were cut this month with no explanation after Lopez previously announced three additional shows in Miami, Toronto and New York in February.

A source told The Post that the tour had added those dates due to popular demand.