Not really

Phil couldn't do anything to hurt his daughter, but he needed release, so with one hand still rubbing Alex's back, the other unzipped his pants, pulling his rock hard cock out. He started slowly stroking it, looking at his daughter's naked body as he masturbated. He imagined laying next to her, on top of her, working his cock into her pussy, playing with her breasts as he fucked her hard, taking all of his willpower to prevent fantasy from becoming reality.

He knew he was about to cum, and desperately reached for the nearest bit of clothing he could find, Alex's panties being closest. He put the cotton panties over his cock and resumed stroking, trying not to vary the movement of his hand on Alex's back as his orgasm hit. The panties were quickly soaked in sperm as spurt after spurt hit the fabric in the exact place his daughter's pussy would normally be, his imagination picturing what it would be like to cum inside his daughter instead of inside her panties.

Phil almost collapsed with his release, his hand leaving Alex's bare back for the first time since he had guided her to the bed, and when it found its way back to her, he realized his hand was at the top of her ass. He looked up to her head, expecting her to be looking at him, shocked, but realized Alex had passed out from exhaustion. He stood up quickly, slipping the cum filled panties into his pocket before putting his cock back into his pants and zipping up. This had been too close for comfort, and while he had satisfaction of sorts, the sight of his naked daughter was already starting to affect him again.

He left the room, for the first time the idea of sex with either of his daughters' crossing his mind, and he was afraid the idea would only grow the longer he saw his daughter naked.