I watched intently through the mirror as Kate straddled Gavin again, her beautiful pert arse looked amazing as she was clearly rubbing her smooth pussy over his cock, getting herself wet enough for him to enter her.
Although I could only see the back of her I could tell she had her tongue down his throat again, I could see the slight movement of his arm as he rubbed her pussy.
I suddenly realised that there had been no talk of a condom, which admittedly concerned me slightly. I hadn't noticed her grab one when she was in the bedroom, I was hoping Gavin had one.
The continued to make out and play with each other for a few more minutes when I noticed Gavin lean over to the pocket of his jeans and pull something out. 'Phew' I thought as I clearly saw him rip open a condom wrapper.
The sight of Kate's arse was unbelievable, as she lifted herself up to allow him to put on the rubber. My heart skipped a beat as I watched her lower herself down on him and allow his penis to enter her.
She gasped as she took him inside and slowly began to ease her way down on his large member. She hadn't been used to one that size since she'd been with me, although she'd told me her last boyfriend was quite well endowed, which always made me uneasy, yet it turned me on to hear about it.
I heard Kate begin to moan loudly as she upped her pace, she hadn't let herself all the way down on his cock yet either, I could see a good few inches of the base of his cock that still remained outside of her beautiful vagina.
After a couple of minutes she started fucking him harder, allowing him all the way inside her, she became a lot more vocal as she bounced up and down on his cock with real vigour. "Oh yes." She moaned. "Oh my god you're so fucking big."
My cock was rigid, yet all I could do was watch, I couldn't even stroke it. It was so frustrating, yet strangely an even bigger turn on.
Kate rode Gavin's cock for a good ten minutes or more before I heard her cum for the first time. She fucked him like a porn star before letting out a huge groan and announcing that she was going to cum, I watched as her rhythm became less consistent as she screamed the place down.