Jacob Whitesides turns 18 years old today, and his girlfriend Bea Miller wrote the cutest message in honor of his birthday! The "Young Blood" singer posted a sweet photo of them together, and wrote about how much he means to her.

"Since the day we became friends almost four years ago not a single moment has gone by where I haven't felt lucky to have the privilege of knowing you. You are such a special person. You are truly one of a kind and I can't imagine a world without you in it," she wrote.

CLICK HERE FOR 11 TIMES JACOB & BEA WERE RELATIONSHIP GOALS!

"Thank you for being the first person I call when anything happens and always listening, for being there when I need you and for making my life a better one to have. I have watched you grow into a more amazing person with every passing day and I could not be more proud of you. No matter what and through everything I will be there and I will love you just as I always have. You put the sun in my sky and the beat in my heart. I love you so much Jacob. Happy birthday ❤️."

Um, we are crying. This is so cute.

Are you happy they're together? Click through to see more photos of them together, and let us know if you ship them in the comments!

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