[coupleak]

This story makes me wonder if your wife kinda has the attitude as mine. Once someone has seen it, it's easier to let them see it again.

My wife and I had been going to public (nude) sauna centers and nude beaches from early on our relationship. As did my wife's sister and her husband. But we never went together. Both sister thought it to be awkward being naked in front of their brother-in-law and seeing us naked.
Till 1 day (after some persuading from both husbands), they agreed to a sauna trip with the 4 of us. So finally after some years, we saw eachother naked.

Now not long thereafter, the 4 of us went on an extended weekend trip. During those few days, when in the cabin, both sisters went topless and naked a few times to my surprise. For example, the 1st morning while I was in the shower, she went to prepare breakfast. When I entered the kitchen, she stood there bucknaked setting the table and her sister was topless. In the evenings, after a long day of hiking, they both came back naked into the living room after taking a shower and sauna. Then they helped eachother rub some lotion on their body. And stayed naked afterwards with just a towel around their heads.

When asking her later on why she did that and if she didn't think it to be weird anymore, she just replied "why would it be, brother-in-law has seen it all before, so no secrets there anymore".

Needless to say that us guys also didn't bother to get dressed when staying in the cabin in the morning and evening time.