Unwittingly Grinded On by My Step Sibling

“You are so hot, and that was so good, honey,”
She laughed and said, “But it won’t stop you fucking Kate, will it.”
“Only if she wants me to”, I told her, “though I don’t have Amy’s permission.” I was sure Miranda was clued in on Amy’s planning, and this would confirm it. I had planned on more Pip, too, but Kate had to come along to spice things up. XXX “You are so hot, and that was so good, honey,”
She laughed and said, “But it won’t stop you fucking Kate, will it.”
“Only if she wants me to”, I told her, “though I don’t have Amy’s permission.” I was sure Miranda was clued in on Amy’s planning, and this would confirm it.