Found his sister's girlfriend in the bathroom naked and fucked

My sister did not spend the night alone, an acquaintance came to her, who stayed overnight. In the morning, of course, the girl went to the bathroom, only her brother did not know that her sister spent the night at her sister and obviously did not expect to find a red-haired girl in the bathroom, and even completely naked. Of course, he was only at a loss for a few seconds, and then he realized what to do ... The red-headed insidious girlfriend was not opposed to getting into a hook right in the bathroom until the boy’s sister woke up.