We're dying to know!

Kendall Jenner is super private about her personal life, so we're shocked that she shared a photo of a handwritten love letter sent to her!

The supermodel blocked out the sender's name with a black bar, so now her fans are left guessing who wrote this for her. Most people assume it must be from her boyfriend Ben Simmons, but others are convinced it's from one of her famous exes. That's a long list... everyone from Harry Styles to Blake Griffin to A$AP Rocky is on there!

"Dear Kendall, we may be miles apart but my love for you grows stronger & stronger by the minute. My innermost feeling is love for you. I will love you until death separates us. 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 note read.

A clever Internet sleuth went back through Harry Styles' Instagram page and found a handwritten note he posted back in 2015, and the handwriting is MIGHTY similar... just sayin'!