[spoilers] Harry and Ruth

[SPOOK91]

I was watching an episode earlier on today from series 3, I can't remember which one but it involved Ruth trying to get a date with a man she had heard whilst tracking conversations, I just didn't quite understand what Harry was up to with Sam because Sam seemed to be encouraging, anyone able to shed some light as to what was actually going on? Spooks can be the cause of a lot of confusion at times haha.