Hi!
It's Emma.
I'm in so deep, and so good...
Mom has had her reservations about Louisa living with us, but Louisa has been so good. Even Mom has to admit that the girl is on her best behaviour, and she's really trying to be better.
The dynamic between the three of us has been like Louisa is part of the family; given her age, it's like I'm a defacto mother to her. It's not official, but it feels that way, except Louisa and I exchange sexual favours, which you wouldn't expect from a mother-figure.
Mom has been slowly warming up to Louisa, though; which, given they matched on the dating app, isn't shocking that there's some mutual attraction there on some basic level, but it's been getting quite flirty. Mom has been spanking Louisa, hugging her from behind, fixing her hair, bossing her around; like a fifties husband with his housewife, letting Louisa know her place.
I came home this evening to Mom eating out Louisa right there on the couch in the lounge, and I said, "Finally getting it out then?"
Mom said back, "That's cheeky of you, Emma. Sit yourself down, and I'll get to you."
I was cheeky, and probably expected a bit of a telling off for that moment of disrespect. I obeyed, and watched Louisa getting a good seeing to with Mom's tongue tiredly dragging around the teen's crotch. I was feeling steamed down there from being at work all day, so I undressed to allow air to circulate coolly around the area.
Mom looked back at my nude appearance with a playful smile before redoubling her efforts on Louisa. I could see her mood was noticeably more enthusiastic about such play than she normally would be, not being as coy around me with a sexual partner as she might be. Mom made no objection to me being more relaxed either.
Though I was naked and aroused, I didn't dare to play with myself, instead just watching Mom and Louisa play. That it was Mom I was watching made it feel all the more tantalising, like it was forbidden but incredibly desired, and having Louisa being an outsider to our family made everything doubly dangerous.
Mom turned to me, deeply inhaling hot currents of air wafting from my crotch, and checking the soakage there, grabbing Louisa as she said, "Be a good girl, Louisa, and tend to this mess," thrusting her head hard against me, almost uncomfortably so as I felt her teeth scraping against each end of my slit.
Louisa licked me as readily as she could given her situation, not given even half an inch of reprieve from Mom. Moans from Louisa let us know she was enjoying the work tasked to her, and Mom was being satisfied that the girl was made to be useful.
It all made me feel incredibly hot, especially seeing Mom being so domineering; she was always firm on me growing up, in much more innocent ways, so her command now comes as no surprise.
Mom made sure to hold Louisa firm, staring into my eyes as an orgasm was teased out of me. She said, "My Emma deserves to feel good, especially after her day at work. Don't you agree, Louisa?"
Louisa hummed, urging greater release from me, only increasing in pressure like a freshly-opened bottle of bubbly. She got to taste every excretion from between my legs, and her eyes sparkled with lust because of it.
It will likely never not feel embarrassing for me to be like this in-front of Mom, but much of the shock has subsided, even with my body trembling from this. I giggled, feeling baptised before Mom and Louisa, lifting Louisa's face up in both hands to look down on her as I said, "You are a good girl for me."
I wasn't prepared for Louisa to say, "Yes, mommy," to me with such relish as she licked my grease from around her mouth.
My heart soared as I asked, "Mommy?"