For future reference, never tamper with a man's computer. You just don't do that. I mean, unless you like finding gigabytes of pr0n. People get off to the weirdest of things. Doesn't mean they are serial killers, they just fap to weird things.

It's hard to say whether it reflects their actual desires. Sometimes sexual fantasies are just that, fantasies. And they don't desire them in the real world. Sometimes it's the other way around. You can't know for sure, so to be safe, I would just ditch him while it's still early.