(BDSM Gstring Tie) Hot Mature Gets Bound and Fucked

It starts with her already in the room, wearing just a tiny black gstring. the guy walks in and doesn't waste time. He grabs her, turns her around, and pulls that thin strip of fabric tight. he uses the gstring itself as a binding tool, tying her wrists together behind her back with it. It's a classic BDSM move—using what she's wearing against her. She's struggling a bit, but it's that good struggle. The kind where she wants it but has to fight it. He shoves her face down onto the bed, ass up... that black tie is digging into her skin now... He slaps her ass, hard, leaving a red mark right above where the fabric bites in. He fucks her like that first, doggy style with her hands bound by her own underwear. Every thrust pulls the tie tighter. You can hear her moans muffled by the mattress...