He goes for it.

Frank stared at the redhead as she wildly flung her head side-to-side as Sally hungrily ate her pussy. Jenna screamed, "Oh fuck you sweet bitch! You're making me crazy! Oh fuck right out here in the open.... God you're gonna make me scream!"

Any lingering doubts he had left were vanquished by the lustful rage that consumed him. Kicking off his shorts, Frank walked towards Sally and knelt behind her upturned ass. She stiffened for a moment but nonetheless continued to lick her girlfriend's pussy when he pulled her bikini bottom down further. He caressed, squeezed, and kneaded her ample butt cheeks before his fingers slipped between her thighs to spread her labia and stroke her clit, causing her to moan into her lover's pussy.

He rubbed his cock along her wet pussy lips, teasing her sensitive clit, before sliding it in her hot velvet hole in a long, slow thrust. The blonde let out a muffled groaned against Jenna's snatch in appreciation of being stuffed with cock.

"So good! Oh God, so good!" the redhead cried out, raising her knees to lift up her hips to give Sally's mouth better access.

Frank rested his hands on the blonde's ass while he furiously pounded her from behind.

Jenna apparently could not hear his grunts over her own cries of pleasure as she started to climax. "Suck my clit! Oh fuck suck it! Put your fingers in me! Fuck I'm gonna come! Oh baby I'm gonna fucking come! Don't stop oh fuck don't stop I'll kill you if you stop!"

Frank could not see from his angle what Sally was doing to her girlfriend but whatever she did excited them all.

"Oh fuck so good!" Jenna howled in ecstasy, reaching down to grab Sally's hair to pull her even closer against her crotch. "Oh God! Oh God! Oh God! Oh fuck, I'm still coming!"

Frank could feel the blonde's pussy spasm as she began to climax herself. She pushed her ass back against his already deep, hard thrusts, trying to get even more of his cock inside her. It was obvious to him that she was bisexual, enjoying both cock and pussy. He responded by digging his fingers into her wide hips and pulled her against every mercilessly hard stab of his cock.

"FUCK YESSSSSS! FUCK! FUCK! FUCK! FUCK! YESSSSS!" he roared, shoving his dick balls deep into the blonde's tight wet cunt. His cock throbbed as he pumped what felt like gallons of jizz into her womb. He grabbed Sally's luscious, long golden mane to snap her head back, detaching her mouth from Jenna's quivering pussy, and emptied his balls into her.

Sally screamed in ecstasy as she came, still rocking her hips back and forth to milk his cock dry. As she came down from her orgasmic bliss she saw Jenna looking past her to Frank -- the redhead's beautiful face was contorted with confusion, surprise, and shock -- realizing that he was not only watching but participating!

With a loud, final grunt, Frank jammed in cock into Sally's cunt, gripping her hips tight, to spurt the last of his cum then let her slump onto of Jenna's sweat-glistening body.