On-Duty Fantasy Comes True

I met my fiancé's sister when she came into the store where I work. We clicked instantly and started talking more often whenever she dropped by to shop. One day, as we were chatting near the checkout counter, our hands brushed accidentally during a sale promotion discussion. That tiny touch sent electric sparks through both of us. After some tentative flirting over text messages, we decided to give in to our mutual attraction one night after closing hours. The moment we locked ourselves in my office behind closed doors, there was no holding back. She pushed me against the wall and kissed me fiercely, her tongue plunging into my mouth as she ground her hips against mine through layers of clothing. We undressed each other quickly, our hands fumbling over every inch of skin they could reach. Her breasts were firm and full in my palms as I squeezed them roughly before pinching her nipples until she cried out. She slid down to her knees and took me into her mouth, swirling her tongue around the head while taking more and more of my length inside until I was panting heavily with need. I guided her onto the desk behind us and lifted her legs to wrap them around my waist, positioning myself at her entrance before pushing in deeply. She gasped loudly as I filled her up, meeting each hard thrust with eager moans that echoed off the walls of the empty store room. We moved together frantically until we both climaxed explosively, collapsing against one another in a sweaty heap on the cool surface of the desk.