He tells her about Mrs. Hartman's offer

"Right." Matt didn't bother reminding his sister she was still naked, with little bubbles of sweat glistening on her golden skin. He also didn't tell her how much he wanted to lick up that sweat gathered in her cleavage. Despite everything they'd done together, talking about it, asking for it, seemed like a step he wasn't ready for.

"Amy's mom called. She said she'd pay me a hundred a week to basically be Amy's boyfriend."

"Eeew. Talk about creepy."

"Tell me about it. But a hundred a week. That's real money."

Karen nodded. "But when Amy finds out... and you know she's going to find out. Mrs. Hartman is ditzy. At some point she'll spill the beans and Amy will be devastated which means I don't have a friend or a job, you don't have either the boyfriend or the tutoring job, and at school they'll spin it that we were the badguys."

"I sort of figured that part out. What I didn't figure out was what to do about it."

"So you came to your smart sister to sort out your problems... again."

"Exactly."

"Okay, let me think." She grabbed a hand towel on the nightstand by her bed and slowly wiped herself down.

Matt watched, almost holding his breath. If seeing his sister naked was sexy, this slow, deliberate wipedown was purely erotic.

She didn't notice his silence or his stare until she'd finished. "Oh gross. You can't even keep your tongue in your mouth can you?" She threw the towel at his head.

He caught it and held it to his nose. Damn, he could smell her pussy juices in it and her sweat. "I'm keeping this towel."

"Pervert."

"What can I say? Maybe I am or maybe I'm just a normal 18 year-old guy. Either way, don't bother trying to talk me into giving you back the towel. It's mine now."

"Whatever. I think the only solution is to be upfront with Amy. Tell her about her mom's offer."

"She'll freak and there goes my money."

"Our money. As in you're giving me thirty because I'm going to make it seem okay to Amy."

"If you can do that--"

"Trust me. Have I ever let you down?"

"I lost count."

She laughed. "Let's get breakfast and then we'll call Amy."