Just nut in her mouth and get on with your day.

You don't want to get into a whole thing here. This feels really good{if Morality < 35
}, but you don't want to go all the way. It's an arbitrary line to not cross, but you have to draw lines somewhere. {else
} but you don't have all day to waste on this little cat. {endif
}
"Get it baby..." you grab her head with both hands, pumping you cock into her mouth. She gags, and when you let her pull off, sticky strands of spittle connect her lips to your cock.
"Damn... what the fuc-" her mouth is occupied once more, cutting off her words. Her hands grip your legs as you poke her throat. Saliva drools from her open mouth. She's making obscene noises, but she's not pushing you away.
"Relieve that tension, Lucy." Her eyes find yours. You half expect anger, or disgust...but she just nods, and lets her hands drop. You take the unspoken invitation and put one hand under her chin and the other on top of her head, pistoning your cock into her bottomless throat as she drools all over herself.

After a minute or two, you're ready to shoot. "Take my cum, cumslut." You hold her nose as you send your cum into her gullet. She squeals, swallowing desperately and coughing until you release her nose. She falls back onto her ass, coughing and retching. You brace yourself for her to flip out.
"Wow...usually...married guys are so timid. They're so worried about what they're... *cough* doing." She stops to spit a mixture of cum and throat mucus onto the floor. "I've never had a guy...just take control of me like that."
"You never had me before, baby." You're cleaning your cock with a random shirt that was hanging in the room. Probably belongs to her father. You don't give a fuck.
"That's true." She stands on shaky knees. "Take me into the other room and use me more, baby..." she puts her hands on your chest.
"No." You push her hands away. "I've got no time for that." You reach into to dryer to grab your shorts. They're still damp, but you pull them on.
"Oh...come on, daddy..." She wraps her arms around you from behind, reaching for your cock.
You turn around suddenly, knocking her off balance. Your hand goes to her throat, pushing her back against the door.
"Don't push me, Lucy." Your other hand goes right to her snatch, pushing her panties aside as you jam three fingers inside. "I said I'm done for today." Her eyes roll back and she moans. You pump your fingers in her cunt violently, squeezing her throat until her eyes pop.
"James...you're so...sexy..." she says in a croaking voice. "Please...."
"If you're a good girl, maybe I'll come back and fuck you like you deserve, kitty cat." You release her neck, remove your fingers from her pussy, and calmly continue to get dressed. She whimpers, and you give her a look. "What was that?"
"Nothing...I'll be a good girl for you, James."
"Good." You draw a finger down her jaw. "You're a pretty little slut. I wouldn't mind breaking you, but you aren't worth my time right now. Have to get home."
She nods, and you sip your finger into her mouth for her to suckle. You've got her. She'll be a submissive little ride later, you're sure.
You head out, returning your cart and then driving home, heart pounding as you enjoying the endorphin high from your dominance. You roll into your driveway around 2:15 PM.