My (F) unexpected shower visitor (M)

We sometimes socialize with this couple Arne and Jean. My husband has a business relationship with Arne and I have to mention that Jean is his trophy wife. She's about 15 years younger than Arne and her body is a "10". I think I'm in pretty good shape, but she is a little intimidating. We go to their house for dinner frequently and usually end up in their hot tub, in bathing suits. My husband mentioned one evening we were getting ready to get in the hot tub and Jean walked in while he was nude, she said her suit was in the room, then she proceeded to change in front of him. I'm not jealous so he gave me a description of her perfect body.

Arne and Jean also had a beach house and invited us to spend the weekend with them. Saturday afternoon I went to take a shower, Jean and hubby we having drinks on the deck and Arne was in the kitchen doing something when I went to the shower. I was getting all lathered up when there was a light rap on the door. I said "yes?"