"I don't really want to suck you off again, Jack," she says quietly, as she keeps lightly stroking my c**k. "I want you inside me. I want you to f**k me, Jack.
I can't believe I'm hearing right. My twin sister, who I've been fantasizing about, as I spied on her through her window, is now asking me to f**k her delicious, young p***y. But I'm having second thoughts. If I f**k her, then there goes the reason for the blowjob lessons and her concern about letting Tony or other guys f**k her. I've been thinking that if she gave her boyfriends blowjobs, but didn't let them f**k her, she'd be coming home to me hot and horny after her dates. If I take her virginity now, there's less reason for her to put limits on what she'll do with other guys, and less opportunity for me.
"Lisa, what about keep
