Read Will Smith's Touching Birthday Message to Willow

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Willow Smith poses for a portrait backstage at Day 2 of the Fader Fort presented by Converse at Converse Rubber Tracks Studio on October 24, 2014 in Brooklyn City.

Willow Smith turned 15 (yes, she's just 15 and yes, she spent last week partying with the Kardashians) today (Oct. 31), and her famous father Will Smith took to social media to celebrate with a touching tribute.

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"When you were born, it took about 2 seconds to realize that I was willing to die for you," he wrote on Facebook. "Thank you for correcting my heart -- and teaching me how to love without constriction or condition."

See the full post below: