Lena Dunham and Jack Antonoff really, really love ‘Cats’

Lena Dunham and Jack Antonoff celebrated four years of dating in April. Getty Images

Lena Dunham and Jack Antonoff celebrated four years of dating in April.

Lena Dunham and Jack Antonoff are the purrfect match.

After four years together, the “Girls” star, 30, and her indie rock singer beau, 32, have often shown a mutual appreciation for feline-inspired trinkets.

The Bergenfield native was recently spotted “purchasing an insane amount of show merchandise” — to the tune of $1,200 — at the opening of Andrew Lloyd Weber’s Broadway revival of Cats, according to a Page Six report.

But it was a kitty tchotchke that once landed Jack’s actress girlfriend in hot water with the TSA at LAX airport when agents flagged a “self-defense keychain” shaped like a cat in her purse.

“It’s shaped like a cat — it goes over your knuckles,” she explained during a 2014 appearance on Late Night with Seth Meyers. “But I guess the two ears could gut somebody…I understood sort of intellectually it could be used as a weapon, but really all I thought was like, ‘What a cute little cat!’”

Unfortunately for Lena the kitty keychain was confiscated, but hopefully Jack made up for it with his recent shopping spree!

Jack and his designer sister Rachel Antonoff attended the Broadway opening together.

Wyckoff-raised Constantine Maroulis took his sweet 5-year-old daughter Malena James Reed-Maroulis to the show, which is the first-ever revival of the long-running musical.