I get what you are saying but the "don't touch me there" part is kind of a limiting. With kids it is even more of a problem. Legs are out, that's where the run up and give you hugs all the time. Shoulders? They put their arms around you every time you pick them up.I always shower before getting naked with my wife, so there should be no problem with exposure. If you are engaging in spontaneous LM sessions it could be a problem but it can be minimized by applying the gel to a specific location every time which your wife can avoid touching. Wash your hands thoroughly after applying the gel so you don't transfer it.