Parents who have teens and you have gotten remarried (to someone other than the childs bio parent)?

Parents what do you feel is "too close" for a parent and their new spouse in front of their teen daughter. I got married to my wife in May 2010 and I had a 15 now 16 year old daughter so I was wondering what other parents feel is to much PDA in front of teens, because my wife is very open about showing affection towards me in front of my daughter and I'm not. I'll hug or kiss her and I'll do the same with my daughter but anymore than that with my wife makes me uncomfortable in front of my daughter, what is your opinion as a parent. How far is to far in front of a 16 year old?