As I did up the collar, the size I had guessed was a little tight. I asked if this was OK, “ Perfect was the response” say when I muttered as I tightened it. “stop means stop” was the reply. I moved in front of her pulling a tool bag under my knees so my suit was on ruined on the floor and knelt in front of her. I ran one finger over her sex and found that her wetness had spread to her labia. Curling one finger into her, arching it forward along her front wall I leant forward. She lifted one leg over my shoulder and I was granted access to her clit. My tongue brushed over it, causing her to shudder and struggle to stay balanced on one foot. Her cuffs supported her as she lifted her other leg over my uncovered shoulder, pulling me into her sex with her thighs and tilting her pelvis so my tongue had complete access to her swollen clit and engorged labia. By now I was lost in her scent and taste, sliding a second finger into her I continued to lap at her sex, her, she told me later the restraints and the sheer wickedness of the situation led her to cum multiple times as I licked her. Gently standing I helped her place her feet back on the ground. She leant forward taking her weight on the cuffs and recovering from her ordeal. Opening a tool box drawer I removed a packet of condoms and lube rolling one onto my swollen cock I moved behind her, her response, leaning forward more, rising onto her toes and thrusting her arse further out. I placed the head of my cock against her opening and waited. She thrust back onto me with a degree of desperation. Her tightness was fantastic even through the condom. By now I was lost in the moment. I started to thrust into her. My strokes being matched by hers our bodies slapping together. The build up had been so intense, the scene in front of me was so incredibly sexy I knew I wouldn’t last long. Reaching around her, her swollen clit was easy to find and I rubbed it furiously to feel her cum on my shaft. This set me off and as my balls tightened I asked where she wanted my cum. “ My mouth, my mouth” was her urgent reply. I pulled out rushed in front of her tearing off the condom she sunk to her knees. Her hands held high in the air and I released into her mouth. She gagged which seemed to increase her determination to swallow my load. When I was spent I helped her stand. My cum had spilt onto her lips. Leaning forward I kissed her licking my load from her lips and sharing it with her in a kiss.. I gently untied her, smiled, dressed and said “ I have cleaning to do” Leaving me with my trousers around my ankles and a smile on my face…