The mood had changed completely, and rather than a rush of panic Alexander just laughed at the idea that he'd become so stuck in her head. For all her protestations about him being a founding father, and younger than her, and a war hero, and whatever else she'd tried to classify him as - he'd still found a way into her head, without even trying.
"Oh, I'm sure he could do you a hot chocolate, or... he had just learned about milkshakes," he told her. Now, his boy was more into beer and shots, but hey. "Sure, I can ask him," he nodded. He could see the benefit of rewarding his hard work, and he was a good kid to get his schoolwork done.
"I was trying to behave," he told her, emphasis on the trying. Trying and failing, apparently. He reaction to the simply undoing of one button was incredible, and then came her filthy confession and he was done for. Any thought of behaving, or promises made to another woman, or his dear wife at home, all of them were suddenly washed away. Maybe he was a bad person - he knew that Maryanne was vulnerable, he knew that she had a traumatic past, he knew that she had some issues with alcohol, and that she referred to herself as a slut - a better man would have had the strength to walk away. But it made him feel powerful, and he liked it.
With just that one button undone, Alexander easily had the access he wanted. He slipped his hand beneath the folds of the fabric, and since she'd already removed the offending modern underwear for him he happily got a handful of bare skin to explore. His thumb brushed over her nipple and he watched to see her reaction for a few seconds before he leaned in for a kiss.