Nubes flotantes

I saw this short film as part of the "Mexican Men" compilation of five films that is not listed on IMDB. I'd rate it as the middle film of the five.

We're at a swimmng pool with three people present, two swimming and a spectator. The spectator glowers as the two swimmers swim ever more sinuously. Ignacio and Octavio clearly know each other and we see at the end that they know the spectator too as one of the boys refers to him by his name.

The ending is equivocal. Will Manuel change his views after realising what the two other guys did for him? Or will that make his feelings of hatred worse? We can use our imagination.