Talk about a picture-perfect couple! Lauren Conrad engaged in a very public display of virtual affection on Thursday, Feb. 14 -- a.k.a. Valentine's Day -- when she shared a snapshot of herself and boyfriend William Tell with her 1.7 million followers on Instagram.

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"Happy Valentine's Day to my valentine," she captioned the black-and-white photograph, which shows the couple in a sweet embrace, their faces nearly touching. It's a slightly blurry shot, but the Hills star's smile is crystal clear, as is her fondness for Tell, a University of Southern California law student.

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Valentine's Day holds some special significance for Conrad, 27, and Tell, 33: The two were set up by pals on the holiday in 2012 and have been dating ever since. "She thinks he's The One," a pal told Us Weekly last year.

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Indeed, the Paper Crown designer seems happily smitten. One week ago, on Tell's birthday, she posted another sweet message for her beau. "HAPPY BIRTHDAY to my love, William Tell!!" she wrote on Twitter, linking to an Instagram photo of the ex-Something Corporate rocker.

Prior to finding love with Tell, Conrad was in a relationship with My Boys actor Kyle Howard. She also famously dated Stephen Colletti, Jason Wahler, and Brody Jenner.

This article originally appeared on Lauren Conrad Shares Sweet Valentine's Day Message, Picture for Boyfriend William Tell