Her phone...

Beth closed her eyes and enjoyed the good dicking. Yes. she knew how wrong this all was. Somewhere in her brain, she was registering the hurt she would inflict on Brian if he found out. She idly wondered if she would able to face him when she got home. But the cock she was getting was too good, and her sexual frustration too great for her to care in the moment. "That's real good dick, baby..." she moaned softly as David made long full strokes, ramming home at the end of each one. Beth enjoyed the moment, resolving not to worry about consequences until later.
It was in this moment that the buzzing of her cell phone broke through that euphoric reverie.
"Fuck..." she stretched out towards it, fumbling it into her hand. _Brian. _Why was he calling? He was supposed to be at that event until late tonight. It occurred to her that she hadn't even bothered to tell him she'd be working late. "It's Brian..."
"Shit." David stopped fucking her, sitting back.
"Just... give me a second." She put the phone to her ear. "Hey, baby..."
"Hey...I'm home early. Our event got cut short. Are you at the store or something?"
"Oh, babe...I'm sorry. I'm helping one of the lawyers put together some stuff for a case. I didn't even think to call you about that I'm sorry."
"Oh...that's okay, you didn't know I was going to be home..."
"Yeah."
While she was talking, David began to rub her pussy from behind with a finger. She shot him a look, but his shit-eating grin was infectious, and she found herself bending over. She tried not to give anything away when that oversized cock head pushed its way back into her.

"Nnn...mmmhmm.... Oh, your brother's at the house? Oh thaaaaat....s great, baby.... mmmyeah, We ordered Chinese, so you two should go out...yeah that's fine! Yeah I'm sorry." She had to push the phone into her shoulder for a second to moan. This was so fucked up, and it was turning her on so much.
"Fuck..you just turned on a faucet back here." David whispered.
"What? Oh yeah that's David."
"Are you okay? You sound out of breath, baby."
"Oh? Y-yeah, just a lot of running down to the archives and back..."
"Don't worry, Brian. I'll send her home to you as soon as we're finished." Beth looked over her shoulder in alarm, but David just grinned again.
"Oh..okay, well I'll let you get back to work... see you when you get home."
"Y-yeah... l-love you, b-baby." David's rhythmic pounding was making it hard to talk, and she was worried that Brian could hear the slapping of flesh against flesh. Mercifully, Brian hung up.
"Fucck.... that was...."
"So bad... and hot..."
"Shut up and fuck me, David."
After that naughty scene, it didn't take long for them to finish with simultaneous spectacular orgasms. She was having trouble even worrying that David had cum inside her. She had trouble worrying about anything at all.