I Want to tease and deny your orgasm during phone sex

My boyfriend and I have been together for three years and our sex life has become rather dull and boring. We decided that I would tie him up and try a little Tease and Denial see if that spiced it up any, as he was quite into this. I had four ropes running under the mattress, and tied each wrist and ankle to the ends of them, I was wearing my sexiest of lingerie, things I haven’t worn in a while. It was a really sexy black and gold Basque, stockings, suspenders, tiniest of panties and of course my fuck me now shoes. He had a raging hard on, and obviously was loving this. I walked around the bed, and I began to feel very dominant. I was stroking a whip in my hands and every so often I would let the whip flick over his swollen balls. His whimpers made me horny, so my target was subjected to some more.  I squatted over his face and lowered my pussy centimetres off his tongue, which he was now holding out as if to lick me, no such luck! I began to finger myself and all he could do was to inhale my sex. I had an enormous orgasm, and allowed my juices to dribble onto his face, I undid the ropes and he wanted to wank, I let him get close to orgasm, then whipped his wrist with the whip and made him stop. I told him to put his hands behind his back whilst I made a phone call. I was having phone sex with a total stranger as I looked at my boyfriends cock dribbling with precum, and he wasn’t allowed to touch it. He watched as I made myself cum, it was so hot, he then thought he was going to fuck me. I told him to think again, and tied him back onto the bed.  I went for a shower and told him playtime was over! I could hear him pleading for me to come back and wank him, no chance.