In this Boundless Terrain exclusive, I'm interrupted mid-shower by my GF's sudden appearance. "Can I join you?" she asks, her eyes never leaving my massive, hardening cock. I nod, too stunned to speak. She steps in, her body glistening with water and soap. I reach out, pulling her close, my hands exploring her curves. She moans, grinding against me, and I can't help but slide my length between her legs. She's soaking, her wetness coating my cock. I push in, feeling her stretch around me, and she cries out, "God, yes, fuck me in the shower."