[M4F] FreeUse Sister

She caught him once, and that was it. His bedroom door was cracked open, and he sat in front of his laptop stroking his cock like nothing else mattered. Wet, steady fapping, breath loud, completely lost in it.

She didn’t freak out. She leaned on the doorframe, watched, then just said, “Hey… relax.” No anger, no lecture. “It’s totally normal. We all do it.”

They had a talk.  What he thought would be one of those shameful, embarrassing talks turned into an arrangement.  The house was free use for him to...express himself.  “Anywhere’s fine. You live here too.” She insisted and she leaned into it. 

And she just moves around him like it’s nothing. She barely wears anything. Usually just a robe, a thong, and no bra. Her tits are soft, heavy, and full and impossible for him to ignore.

He touches her constantly. Smacks her ass when he passes. Grabs her tits whenever he wants. “Fuck, these are insane,” he mutters with a full handful. She just hums and leans back into him. "Someone's horny tonight,” she says, smiling while he strokes beside her.

At night, they end up in the same bed with no discussion. Pressed into her, head against her chest, her tits soft against his face. They cuddle like it’s nothing and by morning are back at it again.

That’s just how the house works; it's free use everything: tits, cock, touching, talking - all casual. They never actually cross into sex, like that’s the one line they both quietly keep...for now.