It has made me feel sexy all day,” Cass breathed into my ear. “Now I can feel your hard prick against my leg. If you want to fuck me again, you be...ter help me off with this dress.”I didn’t need any other invitation. Like something from the spy movies I loved to watch, I gripped the metal tag of the zip in my fumbling fingers and slid it right down to the base of her spine.And, like the spy movies, Cass shrugged the dress off and sashayed into her bedroom. The pure white of her bra and thong. She pulled a magenta blouse from the wardrobe, slipping it on."Whaddaya think?" She beamed, doing a spin for Cat. She frowned in response to Cat's shrug. "Huh. Oh!" Trina's face lit up, the older girl raising her hand, "I know!" She unbuttoned her pants, working the tight material down with an effort. Curves came with a price.Stripes. Her panties were striped; a mixture of pastel and dark colours. Cat noticed this with interest, watching Trina intently. Cat's own underwear were striped, except. "Take your shirt off" I dared"I will if you will" she countered I didn't hesitate and pulled off my shirt exposing my chest that was just starting to show it's first signs of chest hair. As I tossed my shirt on the I looked back up at her. Katie was staring directly at my crotch. I looked down to see the outline of my erect cock in my shorts. My shirt had been concealing it, but now there was no hiding it."Nice" she said with a quick look up into my eyes.It was her turn and there was little. "Don't look at me like that. Jacob, if you can't fuck me, there is no other person I'd rather you fuck than Blair." Oh Casey, I think I love you even more now." Jacob said and leaned over to kiss his girlfriend."I think I love you just as much Casey. I knew we were best friends for a reason." We love you too, Casey! Jacob, let's see you make Blair scream with that long hard cock!" said one of the women at a table in the dining room.Jacob began to get up but was pushed down by Blair as she moved.