Kendall Jenner sent fans into a frenzy by sharing a heartfelt love letter from a mystery suitor.

The 23-year-old model and "Leeping Up with the Kardashians" star posted a photo Monday on Instagram Stories of a handwritten declaration of love from a long-distance beau.

"We may be miles apart but my love for you grows stronger & stronger by the minute. My innermost feeling is of pure love for you. I will love you until death separates us," the note reads.

"Right now this separation is killing me, but in my heart I know that nothing could come close to separating us. We are united into one forever, body & soul and I want you to know that I love you from the deepest part of my heart," the letter concludes.

Many believe the note is from One Direction singer Harry Styles, whom Jenner was first linked to in 2013.

Fans pointed out similarities between the handwriting in the letter and a post Styles shared in June 2017.

Others think the note was written by Jenner's new beau, NBA star Ben Simmons.

Jenner was first linked to the Philadelphia 76ers player over the summer, and has cheered him on at recent basketball games.

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"When she's not working, she's been focusing her free time on Ben and flying to Philadelphia," a source told People this month.

"They're still not exclusive though," the insider said.

Sources previously told the magazine Jenner is "very protective" of her relationship with Simmons.

"She's being very private about her relationship with Ben. Kendall's really different from her sisters in that sense," an insider said.

Jenner stepped out solo Monday to The Fashion Awards in London.

The model wore a gold, see-through dress from Welsh designer Julien Macdonald to the event.