Fans are convinced that Travis Kelce gave Taylor Swift a hickey.TikTok/ryanthomasroth

That’s “So High School.”

Fans are convinced Travis Kelce gave Taylor Swift a hickey after she was spotted with a noticeable red mark on her neck during her Eras Tour stop in Sweden.

The pop star’s alleged love bite was visible as she pulled her hair to one side while performing “Champagne Problems” at the Friends Arena on Saturday night.

The bruise, which was located above the neckline of her blue lace dress, was nearly the same color as Swift’s iconic red lipstick.

A red mark was visible on the pop star’s neck as she performed “Champagne Problems” at the Friends Arena in Sweden Saturday.TikTok/ryanthomasroth

The alleged love bite could be seen when she moved her hair to one side.TikTok/ryanthomasroth

“NOW MISS TAYLOR ALISON SWIFT IS THAT A HICKEY ON YOUR NECK OR DID YOU ‘BURN YOURSELF WITH A HAIR STRAIGHTENER’ ???” one fan wrote on X.

“Travis Kelce had big appetite,” another quipped.

“So High School is getting a little too real,” a third added, referring to the romantic track from the singer’s latest album, “The Tortured Poets Department.”

“I’ve been waiting for this,” a fourth chimed in.

The bruise nearly matched her red lipstick.TikTok/ryanthomasroth

Swifties were in a frenzy as they reacted to the bruise on social media.TikTok/ryanthomasroth

The hickey speculation came days after Swift’s romantic Italian getaway with the Kansas City Chiefs tight end.

Last week, the “Lover” songstress and the football player, both 34, stayed three nights at the ritzy $21,000-per-night Villa Sola Cabiati in Lake Como, Italy.

They were spotted taking a romantic stroll at night and enjoying an outdoor candlelit dinner at the Grand Hotel Tremezzo.

“IS THAT A HICKEY ON YOUR NECK OR DID YOU ‘BURN YOURSELF WITH A HAIR STRAIGHTENER’ ???” one person wrote.Instagram/patty_cuts

“So High School is getting a little too real,” another quipped.andrewspruill/Instagram

The couple was also photographed taking a boat ride on Lake Como while holding each other close.

They appeared not to mind the rainy weather as they kissed and took photos while cruising around.

The pair’s romantic vacation came after Kelce arrived in Europe to support the 14-time Grammy winner at her 87th tour stop in Paris on May 12.

“Travis Kelce had big appetite,” a third joked.Mega/BackGrid

Just last week, Swift and Kelce enjoyed a brief romantic getaway to Italy.Mega/BackGrid

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The “Cruel Summer” singer — who started dating the Super Bowl champion last summer — gave her beau several nods throughout her concert since 87 is also his jersey number.

At one point, she repped the Kansas City Chiefs colors in a bedazzled bustier and skater skirt for the “1989” era of her show.

She also changed the lyrics to “Karma,” singing, “Karma is the guy on the Chiefs coming straight home to me.”