They could be in an open relationship, or Alejo could be scouting new participants for his videos? But one thing is certain, there is a huge mismatch in sexual energy. Alejo looks like a 3-cums-a-day bloke. William more like … a Vulcan
Their interaction does teach us a few things about Alejo, though: for him, this is just work. The other person is just a hole to extract his cum, so to speak. (In his own thread there was major controversy over him fucking a guy with a trans past who hadn’t undergone bottom surgery. They questioned Alejo’s ‘gayness’. But when you see this, it’s obvious that he could fuck a hole in the ground and cum)
Not just that, but he actually sounded in agony for most of the video. Which is consistent with other videos I have seen, where he also seemed in a lot of pain, only those partners didn’t care. He actively tried to push the top away.
One thing no-one mentioned yet: good god what a huge load that Alejo shoots! And I genuinely got the impression it’s real!