I'm not so sure about that. From all past impressions I've received where milo talks about Jame, Jame has been Milo's only friend in quite a while. I am under the impression that Milo hasn't had any one he could truly call friend in a good while, with the exception of Jame. Jame's alleged actions must have been a blow to Milo's trust. (hey look it's a pun, lol)
I think that perhaps what truly happened was Jame may have got jealous of the friendship he saw blossoming between Milo and Nelson. He felt threatened by it, and it didn't help matters any that he hates Caleb with a passion that I don't quite understand. When he saw the opportunity, he took the chance to get back at Nelson, perhaps in an effort to hurt Caleb. His actions may have been misguided, and I still don't like the guy. Who knows, perhaps he was under the impression that Nelson had been trying to get Milo drunk so that he could take advantage of Milo, and everything just worked together to give him an opportune chance.
The chance he took with his own misguided actions backfired on him. All I know is this, it will be extremely interesting to see what happens next.
~Linxe