Troy had been a programmer for almost 2 decades. Always careful with his money, he'd built up a nest egg and recently invested in a second house near the local state college that he had intended to rent out to students. After a downturn in the tech market he instead decided to take a bit of a sabbatical, go back to college, and reassess what he wanted to do going forward. So he shuttered his main place and moved in to the new place, enrolling in a variety of classes. He was a typical nerd - a little awkward, a bit extra around the middle, and mostly kept to himself.
Stacey was in two of his classes. One of the advantages of being back in college was all the pretty young coeds. Stacey stood out though. Firm, C cup breasts usually with braless nipples poking out of shirts with deep cleavage. Tiny shorts that highlighted her firm behind and shapely legs. Exactly the type of girl that would never talk to him back when he was young, if not be outright cruel to him. Although Stacey was nice to everyone, including him. Sharp as well as she was acing one of the classes they shared. The other one she was struggling with though and after asking the teacher about tutoring, he mentioned how Troy seemed to be breezing through it and maybe he'd help her.
She approached him after class and offered to pay him to tutor her. She was there on scholarship and if she didn't keep her grades up, it was at risk. He declined the money but agreed to tutor her. After a bit of discussion she ruled out her dorm room because of her noisy roommate and the library since her schedule didn't match up well with its operating hours. He mentioned he had a fair sized dining table that might work and he kept odd hours anyways. He joked also that he had a guest room she could crash in if they needed to study the whole weekend. To his surprise, she quickly agreed and they set up a time after class on Friday.
They met up just outside the parking lot. He was surprised to see that she had what appeared to be an overnight bag in addition to her backpack. She mentioned that he seemed pretty safe. That she'd noticed him checking her out from time to time but nothing creepy and that he didn't seem like the type to try anything unwelcome. Plus he was pretty cute, for an older guy. She had a bit of a smirk when she said that, one he couldn't quite parse, but he shrugged and they loaded into his truck.
Once at his house they spread out the materials on the large table. He helped edit several of her essays, offering some suggestions for improvements. He shared a few of his from the class, pointing out what the professor seemed to be looking for and encouraged her to find her writing voice. She worked on the one for the assignment assigned that day while he made dinner. Reading it while they ate, he complimented her on the improvement. Both being a little beat, she asked to break for the day and for a tour of his house which took him a bit by surprise.
While the main living areas and his bedroom were furnished and decorated the guest room and its ensuite bath were pretty spartan and the second floor with its additional bedrooms and bonus were completely bare. She was impressed by the downstairs but teasingly inquired about the empty bedrooms and second floor asking why he doesn't rent them out - he could easily get some cute coeds to share his living space with him. She'd even be his first renter. It was quieter than the dorm so it would be easier to study. Plus it was private - set back from the road a bit and wooded, you could even study outside and he had a fire pit and small sitting area already set up.
He played off her questions at first. Mentioned that he'd planned to rent it out but after deciding to go back to college he decided to live there. Would be a bit weird to have young women sharing a space with an old nerd like him. She keeps shooting down his excuses, saying he could at least rent to her. She'd be fine sharing his space and enjoyed his company. Especially since she'd have free in house tutoring. He admits this is all good for her, but what's in it for him? He likes his privacy and personal space. She leans towards him playfully, pushing her arms together to accentuate the cleavage peeking out of her top even more and batting her eyes, asking what it would take to seal the deal?
He pauses for a moment, deciding how he wants to play this. Finally he decides to call her bluff. Says he'll let her live there for free on one condition - she had to become his submissive. He admits he had a long term partner that he enjoyed dominating and missed it. So if she wanted to live there she'd have to submit fully to him and his whims. Or she could just get the normal tutoring and occasional use of the guest room.