Marc had been correct in his prediction that Sofia would grill him after his return from Chaney's that fateful night. He was a bit reluctant to provide details, but what Sofia did manage to get out of him, and what feelings she scraped from the surface of his mind, seemed to please her immensely.
At the time, he was still a little uncertain about the situation, even if dating Chaney was proving to be quite fulfilling and lovely. He
wanted
to see her happy. So did Sofia, it seemed, despite being intent on keeping the relationship between her and him well and alive. She was nevertheless deeply invested in seeing Marc and Chaney's relationship succeed and prosper despite that moral contradiction.
But, Succubi didn't operate on the exact same kind of morality. Marc still didn't quite grasp it, and it was a bit of a headache.
However, he was determined to make it work. Besides... he didn't exactly consider himself some 'alpha male pussy magnet', but who could honestly say they were in a relationship with two women at once?
Well, he couldn't, since his relationship with Sofia was a secret, and bragging about it made him feel sleazy. Still, how many others?
He didn't think many. And that did bring a sort of twisted satisfaction to him, though it came second to his relationship with Chaney. After all, he did actually like her. And he liked Sofia, for different reasons.
He tried not to overthink it.
About two weeks pass, and Marc's relationship with Chaney only further solidified, and he was growing rather proud of how good he was at getting her to cum with his mouth work. And she was getting better too, gaining experience and even experimenting a little. Just last week, she wanted to try anal, which caught Marc off guard; not because he never expected Chaney to want to try, but because he almost forgot regular people usually had to prep first. He was constantly reminding himself that Sofia wasn't human, and could just jump ass first on his dick without issue.
It was a bit tough, and Chaney only got a few thrusts in before she wanted to stop, but she was determined to do it, which was something that did surprise Marc... but he wasn't going to complain.
It felt good though, everything else they did. Sofia's claims had been honest, he wasn't numb to normal human pleasures. If anything, he was a little bit more sensitive, which lined up with her assurances.
Still, there were things she could do that no one else could... like wring one out of him with a foot-long prehensile tongue. That was pretty special.
However, about two days ago, Chaney started acting... odd. They kept dating, and he even spent the night at her place being the big spoon after making her spasm. But she started observing him with a mild suspicion. Naturally, he had a bit of panic, but she wasn't exactly acting entirely cold, so he wasn't sure what Chaney was doing. What made him more paranoid was the fact that Sofia had reported a similar sort of... suspicion, from Chaney. He was terrified that maybe, somehow, Chaney had caught on, but he wasn't sure how. Then, one day, things got a bit... crazy.
Marc felt like throwing his controller at the TV, and was reminded why he never really played multiplayer games; he liked to kill or defeat things at a significantly higher ratio than getting killed or defeated himself. He quickly exited the game and decided to return to an RPG he was playing.
"Fuck this shit," he muttered as he launched the other title, already feeling a bit more relaxed knowing he could easily reload a save if things went south.
Sofia was watching, reading a book and quietly giggling over Marc's frustrations, but she made sure not to get
too
obnoxious.
Their parents were again out, for the first time in a while. So Marc was expecting Sofia to start getting frisky, but he noticed that ever since they started their carnal relationship, she wasn't as promiscuous towards him during the day whenever their parents were out. Sure, she frequently took it as an opportunity, but she was more inclined to let Marc do things without interrupting him to practically suck his soul out.
It was a good balance. Even if she was always waiting for a free moment to have a 'sip'.
However, just as he was about to start a new quest in the game, the doorbell rang. They weren't expecting anyone, but it didn't seem odd. Sofia went to answer the door, letting Marc keep playing for a few moments before he heard the door opening, and Sofia let out a surprised remark.
"Chaney?"
Marc froze, quickly pausing the game and looking towards the front door as it closed. Sure enough, Chaney strode in, dressed casually, but looking a bit more cooled than normal.
"Babe? I didn't know you were coming," Marc commented.
"Because I didn't tell you. If you've got a moment, I'd like to talk," she said carefully.
Marc was in full panic mode now, but doing his best to hide it. The worst scenario was playing in his mind, and he was thinking about just
how
he'd be able to explain it. Even Sofia looked a little worried, but she was hiding it better than he was.
Chaney, however, didn't look angry, oddly enough.
The three sat down at the counter, Marc and Sofia on one side, Chaney on the other. Sofia got them all drinks, which Chaney accepted. After they'd all taken a sip, Chaney decided to break the silence.
"So, I have to know... how long have you two been fucking?"
Marc felt like he was going to expire, frantically searching his head for something,
anything
, he could say that might at least keep the situation spiralling too far. However, Sofia spoke first.
"What makes you say that?" she ventured carefully.
"Well, to be honest, I've had my suspicions since before Marc started dating me. I mean, I know you're step siblings and all, so there's that issue, but Sofia, I do know you're not a Girl Scout, and I
have
seen some of the ways you two have acted," Chaney explained.
Sofia looked bashful, Marc was still panicking, but she seemed to have a better understanding of what was going on than he did.
"You don't seem all that angry though," Sofia returned.
"I probably would be, if it weren't for the fact you were encouraging me to date him," Chaney answered. "
After
I had my suspicions. And I know you were encouraging
him
to date
me
."
At this, Marc interjected.
"Wait, what?" He turned to Sofia, who looked a little sheepish.
"I'm curious more than anything, I know you're not a cruel person Sofia, and Marc," she paused, turning to face him and cracking a soft smile, "you seem pretty genuine. So, I'm really just curious why Sofia would want you to date me if you two were already in a relationship. That's bizarre, and I know it's not trying to be cruel."
Marc searched for an answer, but he slumped and groaned.
"I actually really don't know. Sofia's... weird," Marc summarised.
"I know she's weird, but this is pretty extra," Chaney asserted.
Sofia sighed, and leaned back into her chair.
"Marc's cute, step-bro or not. But I didn't want to hog him all to myself, especially when I saw how you looked at him. I'm not out to steal his heart. And I wanted to see you both happy."
Chaney thought on this.