"Prom, you know I'm a picky eater. Not even Specs could dress this stuff up to make me eat it."

Noctis gives Prompto one last squeeze, followed by a kiss on the cheek, before he's rolling over in the hay and pulling himself to his feet. Could he have continued to lay there with Prompto? Absolutely. But, Prompto was right in that they probably needed to get back inside, think about something for dinner, and clean themselves up. Noctis knows neither he nor Prompto smell good after spending the entire day laying in the barn with the chocobos.

Once he's made it up, he offers a hand to Prompto, "Come on, let's go get some decent food and clean ourselves up."