Will looked at his sister, even in nondescript clothing he wanted to fuck her.

"I'm sorry Lex, I didn't mean for things to get that far. I should have known better," he said.

Lexi shifted closer, lifting some hair from her brother's face, "you weren't taking advantage of me. I wanted that, I want you. I have for a long time."

Will's cock lurched.

"It's not that you aren't desirable or that I don't desire you," he started, "I'm your brother. If dad was still here he'd kill me for touching you like that," he said.

Lexi smiled, "dad isn't here and even if he was he wouldn't stop me...