Accidental walk-in

[blueman2021]

We had a visit from my wife's aunt.
She was 45 years old single and took a short vacation in our area. Since we had enough space in our house, it was a given that she could stay with us for these few days. She got our guest room for this time. Since she was out and about most of the time to meet friends, she always returned late in the afternoon.
Then she went into the bathroom and took a shower. Our bathroom was quite large and had two showers next to each other, but no curtains as everything was tiled and there were two floor drains.

On the third evening I came home a little later and wanted to take a shower. It was quiet in the house, my wife was still shopping and I thought that my wife's aunt was in her room.
So I took off my clothes in the bedroom and went naked to the bathroom. So I went through the door as usual and only then did I see her standing in the bathroom. She stood in the shower with her back against the wall and washed her hair without the water running.
Both arms were above her head and massaged her hair!
She arched her back and stretched her breasts directly towards me. Since she had her eyes closed, she didn't spot me right away. She probably heard me and immediately put her arms in front of her breasts. Of course, I apologized immediately and told her that she could also lock the door.

Now I expected her to scream at me but she then calmly said "whatever, I can see you naked too"