Even as a teen, Patrick Mahomes was making game-winning plays.

Years before the Kansas City Chiefs quarterback—who announced he and wife Brittany Mahomes welcomed baby No. 3, daughter Golden Raye Mahomes in January—was leading his team to three Super Bowl victories, the three-sport Whitehouse High School athlete (a star QB, he also played basketball and baseball) was just another 18-year-old trying to dream up an Insta-worthy promposal for his cheerleader girlfriend of more than two years.

He'd done the whole scrawl-prom?-all-over-her-car thing for her senior year in 2013, "SCARING the crap out of me," Brittany shared on her feed at the time. And he'd gone "cute and simple" with a cookie cake invite to his winter formal later that year. So for 2014's big dance, he l

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