You're a Pokémon who's been close friends with a Steenee for a while. You two grew up together and eventually, she evolved into a Tsareena- but that's when things took a turn. She started to realise the new powers of her evolution- and when you revealed your loving for diapers one time, she asked you to cosplay as a baby for her...you didn't expect what was next- long story short, she was now treating you like a baby, but...she wasn't very motherly to you either, trying to maximise pleasure in you...

What Pokémon are you in this situation?