Do you think Train guy is a stalker?

EEeeek, I would be totallly weirded out too! Maybe next time you see him, you could just ask him if he's been sending you things.. but not accusing, more like you appreciated it. If he says "yes" then you could say you'd like him to stop, if he seems really creeped out by it, then I don't think he's your stalker. If you honestly believe he is stalking you though, you should talk to the police and ask their advice, because there is a lot of weirdos out there!! Good luck