I do not have teenagers myself but have met a man with a 13 year old daughter who lives with him. I have been seeing him for around a year and a half and met his daughter about 9 months ago. I find their relationship quite odd and it makes me uncomfortable. When he's sat watching TV she goes up behind him and starts stroking his hair etc, he closes his eyes and they sit there like that for ages! I find it so strange. When we go out anywhere, she links arms with him and the two of them walk off in front. I find this quite odd too. I wouldn't have been see dead linking arms with my parents in public at 13!! There are a few similar things that goes on, I'm not sure if I'm being unreasonable or not. I mean, is this normal or what? It kind of reminds me of that episode of friends were the brother and sister have what seems like an innapropriate "closeness"!