Jake Paul‘s girlfriend just penned him a public happy birthday note … and it’s mushy as hell!!

Jutta Leerdam took to her Instagram page on Friday afternoon to wish the boxer a great 28 — adding a bunch of adorable pictures of the two together to emphasize her HBD message.

“Happy 28th birthday baby,” she wrote. “The hardest worker in the world with the sweetest heart. ❤️”

“So so proud of you of what you’ve achieved already, what you’ve done for other people and the person you are to me and the people around you. I love you.”

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Leerdam and Paul have been together since 2023 — and have been pretty much inseparable since making things official.

In fact, even though Leerdam — a Dutch speed skater — spends a load of her time overseas training on the ice … she’s still been at every one of his big fights, including his most recent victory over Mike Tyson in Texas.

Paul’s often returned the favor, hitting up a few of her races … and for her 26th birthday a couple weeks ago, he, too, authored a sappy love note on IG.

No word yet on what either got each other for their respective cake days — but given the way they speak about each other, we’re sure it was all gifts filled with love.

Happy Bday, Jake!!!