The fight seemed to last forever and no time at all simultaneously. Barry tried to be careful, to keep his hips away from Jamie because he was only human after all, and having all that wet, firm skin pressed against him made him remember other times when there hadn't been swimsuits involved. They were friends, and he wondered how many times he had to remind himself of that when they were together, and this was fun. Silly, playful competition, nothing more.
He was distracted by his thoughts and the press of Jamie's hips against his thigh, and then Jamie found the weak spot that Barry tried so hard to hide. He couldn't help the laughter that escaped, and he wriggled in Jamie's arms, trying to get away from the merciless tickling. Then Jamie was gone, and Barry was fighting to regain his composure. He was breathing heavily, from more than the water fight, but there was enough distance between them that his semi wasn't noticeable. He willed it away, and hoped the moonlight hid the flush in his cheeks.
"I should call you on your foul," he said, managing to make it light and teasing even as Jamie's voice was more serious than usual. There was a smirk though, and that was a good sign. "However, I am a gentleman who can admit defeat graciously."