I felt like saying that I'd felt it way ever since I was 10, but I didn't. I feigned confusion. I stood up, letting go of her t**s and looking down at her beautiful upturned face. 'But Wendy...I think maybe you were right the other day...I'm not sure we should be doing this sort of thing. Are you...' I stopped in mid-sentence; Wendy had pulled my sweats down to expose my huge erection. She immediately had her hands all over it. 'You do feel it, Mark. Look how big and hard your c**k is...Mmmmm.' She stroked it slowly and sensually. 'Don't deny it; you want it just as much as me. Oooooh....' Then once again she popped it into her mouth and started giving me a slow, luxurious blowjob. Man, my sister could suck d**k. She kept looking up at me; she wanted to watch her suck my c**k. After a min

