For over a year ago, Jules the hedgehog was now flesh and blood again. He has been a polyamorous relationship cuckold relationship with his wife and son. His son being the bull in the relationship. But at the same time it was still a poly relationship, he was still in a throuple with the two people who matter most in his life. Sonic such as much as his boyfriend as he was his bull.
After all the two had their romantic moments. Where they just went on dates and even slept together a few time without his wife Bernadette present. Although thanks to his son, he either considers himself either bi or even pan.  
One day Jules was walking around the kingdom of Knothole. He spots his son's ex-girlfriend Princess Sally Acorn. He sees her overseeing reconstruction of a few buildings after the last Eggman attack.
Jules: (walks over) Hello Your Highness.
Sally: (turns to Jules) Ah hello Jules. Good to see you. How is Sonic doingI haven't seen him for awhile.
Jules: Sonic's doing alright. Hehehe, he's probably with his mom?
Sally: I see, that's good to hear.
Jules: So uh, I see things have been going well in the rebuilding process.
Sally: Yup. It's been a while, but the kingdom is now finally restored to it's former glory.
Jules: That's great to hear, but what about the damage in other places. I know some places were hit pretty hard.
Sally: It's a slow process. But the other freedom fighters got undercontrol.
Jules: Anything I can do? I may not be a robot anymore but I can still help.
Sally thinks for a moment, and then look at him.
Sally: You know what, yeah... we are a bit slow on construction and if you do have experience you can help.
Jules: Yes I do! (The older blue hedgehog grabbed a hard hat, and started to help out.)
Sally watches Jules do some construction, and as he was hammering way, using tool, and lifting up heavy stuff. The young chipmunk girl couldn't help but admiring his muscles. He was very strong even if he was no longer a robot with super strength. She just blushed looking at him. 
Sally can admit to herself that he was a very handsome man. Of course Jules did look like Sonic only more refined and mature looking. Which just looking at him just turns her on. She would finger herself right now if she could.
As Jules was still working, he wipes the sweat of his face. He looks at the princess who was staring up at him. But he noticed she was blushing well not just blushing, he could tell she was turned on by him. She makes the same horny face his wife does and that just makes him smirk.
Jules: Sally, do you have a minute? I need a drink of water.
Sally: Uh, y-yeah sure!
He was actually lying but, it was a perfect excuse to make a move on her.
Jules: Great.
She leads him to a small place, that was a break room inside a small building. He was drinking a bottle of water when he looks at her.
Sally: S-So what was the real reason you wanted to talk to me?
Jules: Oh it's nothing, just you were making a very cute face.
Sally: Cute? (Blushes)
Jules: Yeah, it's the same look my wife does when she wants me. (Or their son)
Sally: (Widened her eyes)
Jules: (Gets closer)
Sally: Um... I uh.
Jules: You really are a very attractive young woman Sally. My boy Sonic was an idiot breaking up with you. (He gives her a sexy smirk)
Sally: I... well, thanks...
He leans in and kisses her lips. She was hesitant but she eventually returned the kiss.
Jules: Mm.
Sally: (Blushed, moaning)
Jules and Sally's tongue starts to intertwine with one another. Her hands touch his chest as the kissing continues. He breaks the kiss, and starts to nibble on her neck, which made her moan.
Jules: So are you a virgin.
Sally: N-no, a guy name Geoffrey took that a long time ago.
Jules: And have you been with me son? (He was flirting her as he groped her ass)
Sally: Mmm! Yes, a couple times.
Jules: Well since you like Sonic, I know you are gonna like me. (He puts her on the table)
Sally: Wh-what are you doing?
He grabs her and places her on a table. He pulls down her panties and starts to eat her out. He grabs her and places her on a table. He pulls down her panties and starts to eat her out. Sally can feel the older man's tongue invade her body.
Sally: Ahhhh! Oooohhh!!
Her legs were wrapped around his head. He was enjoying this. Eating the pussy of his son's ex. The son who he had been in a relationship with who he called his boyfriend. Surely Sonic wouldn't mind his dad blowing off some steam with his ex. Hopefully his wife didn't mind either.
Sally cums in his mouth. He drinks up her sweet cum. He licks his lips. He looks down at her.
Sally: Oh God, Jules. That felt amazing.
Jules: Glad you liked it, I'll show you something better.
Sally: Ooohhh, I'm sure you will.
He pulls down his pants, and reveals his cock. Jule was not as hung as his son. But Sally was not bothered by his size. Jules puts his cock inside her wet pussy. He started thrusting away. Sally wraps her arms around his back.
Jules: Oh god Sally, you're so tight.
Sally: It's cause, Sonic was the last person to fuck me. It's been so long since I've felt the touch of another man.
Jules: You like my cock, do you?
Sally: Oh yes, I do.
Jules: What does the future queen of Mobius want?
Sally: Oh baby, make me a royal cumslut! (On the table she was now laying 
Jules: (Slaps her ass) As you wish, your highness!
Jules fucks her with passion. He thrusts his hips and she moans loudly. She was having a blast. His cock was pounding away. This was the best fucking she had gotten in a while.
Sally: Oh yes, yes, yes. Right there, don't stop.
Jules: Fuck yeah.
Their breathes were heavy. Their moans were loud. Jules was giving Sally a pounding, he was giving it his all.
Jules: Ooohh, shit. I'm about to cum.
Sally: M-me too. Jules not inside it's not a safe day for me!
Jules: It's okay, I'll pull out.
Jules gave one more thrust, and pulled out. To his surprise Sally got on her knees and put his cock in her mouth. She sucked and slurped on it. She wanted him to cum in her mouth.
Sally: Mmm.
Jules: Oohhh, fuck!
He came, emptying his balls into her mouth. She swallowed every drop of cum that came from him. She wiped her mouth with a smile.
Sally: (Breathing heavily)
Jules: Hahaha, that was a great lay.
Sally: Yeah...(She kiss the tip of his cock and he winced in pleasure)
He kisses her, and then they both get redressed. Jules leaves and returns back to work.
Afterwhile...
Jules was now returning home. He had a huge grin on his face. He was proud of himself. He walked inside and he heard moaning the moment he got in. It was course coming from his bedroom. He walked in and saw his wife on their bed with his son fucking her doggy style.
Bernadette: (Moans) Ahhhhhh!!!
Sonic: (Fucking her) Oh yeah, that's it mom!
Jules: Hey.
The two hedgehog's look at him and Sonic smiles seeing his father, he was still fucking his mom as he waves at Jules.
Sonic: Hey dad, where you were you, mom and I tried to text you but you didn't answer.
Jules pulls out his phone and sees it's dead. 
Jules: Ooooh that explains it. Sorry guys, also ummm Sonic you should know I ran into your ex and well...
Sonic: You fucked her?
Jules: Yeah, you mind?
Sonic: (Sonic looked at his mother) You hear that mom, dad cheated on us. (He smirked)
Bernadette: (Grins) You cheated on your own family, you bad boy. (She moaned)
Sonic: You really fucked Sally, didn't you? (Asking to be sure)
Jules: Uh huh. (Nodded)
Sonic: Well then. Since you were bad. I guess you have to punished.
Sonic stops fucking his mother and walked toward his dad as he punished him down on the bed and in the blink of an eye, Jules was naked and tied to the bed. With Bernadette and Sonic looking down at him with wicked expression on their faces.
Bernadette: Now dear I think it's time for Sonic and I to punish you for your infidelity!
The female hedgehog climbs on top of  Jules and sits on his face, on his lips was his wife's pussy. Leaking down from it was his Sonic's cum. Bernadette forced him to eat her out while Sonic got on the bed lifted his dad's legs and started fucking him in the ass.
Jules: Mmmm!!
Sonic: Oooohhhh, fuck! You are so tight dad.
Jules was being dominated by his family. He couldn't believe this was happening and he couldn't do anything about it. They had him tied up.
Bernadette: Oh yes!
She moaned feeling her husband eat her out. Sonic was loving the feel of his dad's ass. Jules know this is gonna be a looooong night.