Too late to stop now

Your hands reached the small of Grace’s back but you continued down, finally resting them on her ass as you worked the lotion into her skin. It didn’t take long for you to be a bit more aggressive than you should have probably been but you couldn’t stop yourself from groping her flesh when it was now yours to touch.

Grace made no movement to stop you and while her panties were still in the way, you mostly ignored them, the lotion and your hands making the fabric ride up until it effectively looked like a g-string, almost disappearing between her cheeks as you ran your hands over whatever you could touch.

You probably spent longer than you should just playing with her ass but you eventually drifted your movement down in between her legs, first running your hands along her inner thigh and letting your fingers get closer and closer towards her panties. You heard Grace quickly breathe in when you ran a finger along her slit through her panties, feeling a wet spot from your continued teasing.

You wanted to just rip off her underwear so you could get them out of the way but you refrained from pulling them off so Grace’s rule was still being kept, either her or you needing to keep their underwear on. Your erection still rested against her as you lifted her panties and let your fingers move under the waistline.

After all this teasing, Grace’s reaction and the moan that escaped her lips was worth it as you ran your fingers along her pussy and slipped them inside much to her pleasure. Everything had been building to this moment and Grace even seemed to raise her hips to allow you to push in deeper.

That was as big of a hint as you were gonna get for her telling you to continue as you started to fuck her with your fingers, her pussy easily wet enough for you to play with her as you pleased. Your restraint about keeping the massage act up was now gone as you curled your fingers inside her, trying to find what made her moan the loudest while bringing her up to a climax.

The thought of her moaning too loud finally brought your attention to the fact that the noise of the shower running in the bathroom was no longer there, not pausing in what your hands were doing as you took a quick look around the room.

The door to the bathroom was now ajar and you saw Emma stood there in the doorway, her hand clearly between her legs as she watched you finger fuck her mother. You knew Grace would most likely panic and stop what was going on if you didn’t warm her up to the idea so you quickly sprang into action.

You continued what you were doing with your hand, curling two fingers inside her as you lowered your weight on top of her. Leaning forward, you pinned her more directly to the bed and got your mouth closer towards her ear.

“You do know I’m not gonna stop until you cum on my fingers and that means I’m not stopping even if Emma comes into the room” you warned, whispering in her ear and Grace could only let out a moan as you continued to piston your fingers inside her while you spoke.

“You haven’t even noticed, have you? The sounds of the shower ended a few minutes ago and she's already heard you moaning on her boyfriend's fingers” you reminded, her eyes opening as she realised you were speaking the truth before she shut them again, trying to stop herself from seeing the truth for herself.

“No…Fuck…” Grace mumbled out, not able to say anything else but her body told you everything you needed to know, feeling her pussy clamp down on your fingers even if she wouldn’t admit it herself.

“I saw her watching from the door. It’s perfect really, a mother who likes to be watched and the daughter who loves to watch. You must have known her shower would only last so long and now… I’m gonna call her over to watch how slutty you really are” you warned, feeling her body love the idea while her mind was stuck leaving her moaning without an intelligent response.

You placed your free hand on Grace’s back as you got up, partly to steady yourself but also to keep her down on the bed to show her you were in charge. You motioned for Emma to join you and while it looked like she hesitated to come back into the room, she obeyed and timidly walked towards the bed while your attention returned to Grace.

“She’s right here even if you won’t open your eyes to look” you told Grace, feeling Emma’s standing behind you away from the bed.

The fact that Grace wasn’t looking in her direction seemed to bolster Emma’s confidence, finding that her mother was more embarrassed in this situation than she was and the usual roles between them had reversed. She looked at the situation with a renewed gleeful appearance and while she still hadn’t spoken up to solidify her presence to Grace, you felt she was now doing it purposefully in order to give Grace more pleasure.

As gracefully as she could given the situation, Emma joined you on the bed as you felt it shift beneath you, her arms wrapping around your body and feeling her bare chest now pressed against your back. Her head rested on your shoulder as she looked down at her mother and while you were sure one of her hands was now at her pussy, her other made its way around you to grab hold of your cock as she started to stroke you.

“I’m sorry mom but I had to come and watch” Emma blurted out in the heat of the moment.

Grace gasped under you as the truth was confirmed in her mind but that did nothing to stop what she was feeling and the continued pleasure she was getting from your fingers only added to that. The signs of her orgasm getting closer became more obvious now that she had given up hiding her moans and she finally moved her arms from her side to be closer to her head, her grip on the pillows next to her getting stronger as she tried to hold herself back.

“I think you're getting close and there's no holding back in front of both of us…” you teased, mentioning Emma once again just to remind her.

With everything you were doing, it was a surprise that Grace hadn't cum yet but even her strong will to hold back could only last so far as you felt Grace tighten up around your fingers.

“Oh fuck, don’t stop, don’t stop… I’m cumming!” Grace cried out, her body tensed as she came on your fingers.

You watched her squirm with pleasure and while you enjoyed the feeling of power it gave you to know she had given into you, you noticed Emma had stopped stroking you, her hand only gripping you as you felt her body behind you shiver as it seemed she had pushed herself over the edge as well.