We got to the river after a confusing and slightly nauseating drive through same-same-same-same 80s-brick suburbia. Some teenagers were already there, splashing around in the water until a cellphone rang from where it was wedged in the fork of a tree and they soon wandered off in a dripping bunch. They were nice - not sullen, not self-consciously brash like I was at that age. I always cringe hard when I see teenagers acting out. The last guy waited for us to get down to the water's edge, then threw the rope up to me before he climbed out up the exposed tree roots.
Then it was my turn to swing out on the rope and splash. Hayden swung in after me and we headed out across to the other side. And then back. Hayden did another lap - this time much more seriously - while I got out and waited for him on the bank. I watched him come back across the water towards me. I felt like I'll always be doing that. There's nothing so wholesome as a freshwater swim.