It had been hot all afternoon, and the pool party at Dani's family's house was a lot of fun. Their backyard was full—music thumping low through hidden speakers, the scent of barbecue thick in the air, a few friends, some half-buzzed and lounging in wet swimsuits or in the pool. I’d been in the water most of the day, stretching out across a float with a soda in hand, or climbing in and out of the pool to feel the air hit m...