[spoilers] Harry and Ruth

[Silktie]

That's not entirely true - he also laughed at Zoe in the EERIE ep.

I also read somewhere that they cut a confrontation scene between Harry and Ruth from 2.2 because there was too much sexual tension flying around and they didn't want to go that route. It's still in the script, but after PF and NW had acted it out, they decided it would create the wrong impression. Thing is, in this scene Harry shouts at Ruth for being excited about finally seeing some action, and when she almost starts to cry, he immediately apologises. He never does that with other people, so already there you can see he handles her differently from anyone else.