'I stand by the fact that I don’t think TLR is using Our Ryan. I do believe it’s the only bit of love and hope he has in his life.'
I agree. Even before he'd had much to do with Catherine he sort Ryan out, hanging around the school etc. So yes while he obviously isn't a good man I do think his feelings for Ryan are genuine, maybe an unhealthy obsession.
Ryan is just so easily manipulated. He so quickly confided in the pe teacher who has bullied him for months, it isn't hard to see he may have believed Royce's stories and excuses.
As an aside what is Catherine planning on doing in the Himalayas she seems to get out of puff at any exertion.