Woman spying on her boyfriend in the shower and masturbating

She had started this habit a short time before, she didn't know at what point she discovered she couldn't get away from this obsession. It was silly because she was not doing anything really bad, they were boyfriend and girlfriend and she did not imagine that he could get upset if he knew about her little pranks. It was something innocent, they consisted of her entering the house with the utmost stealth, without making noise, all to find him in the shower, she did nothing but wait behind the door and follow with desire his every move, she did not understand why but seeing him naked in that way put her in a hot and perverse desiring mode.