"how'd you find me?" he panted, throwing water atop his curls. the other shrugged, hands in his pocket, hair hidden by the beanie "you're always here when something's wrong"
''It was always you.' Louis whispered, just for Harry to hear, his smile growing impossibly bigger, pulling Harry close again for another kiss, grabbing him by the waist.
'Always you.' Louis whispered again.
---
or, an au where harry and louis broke up but there might be hope.