Disclaimer: I do not own Ben 10 (and if I did we all know what I would do)

Flashback

"Okay Grandpa, I definitely owe you an explanation (Grandpa Max's glare hardened)…I know you're not gonna let me off easily but please just hear what I have to say," pleaded Ben. Grandpa Max's glare degraded but it was still evident.

"Fine, but let's sit down for this. I've just found out that my grandson has been smuggling a criminal inside this caravan," sighed Grandpa Max as he rubbed his temples. Ben sighed in relief, but felt nervous and embarrassed.

"Uhm…well…after I came back to earth on that ship…I took the portal opener and opened the portal so I could go the null void," Ben confessed. Grandpa Max eyes narrowed. "B-but you have to understand Grandpa!"

"Understand what? You smuggled in a criminal and plus don't you remember what he did to you?" argued Grandpa Max.

"He's not what he used to be you know! He's changed!" argued Ben.

"You don't have any proof of that! Your parents are expecting me to keep you safe and with him (Grandpa Max pointed at Kevin) here it is quite hard to do so!" yelled Grandpa Max. His voice raised just like the time they argued when Ben got in troubled for laying the Sumo Slammer game. Grandpa Max rose from his chair and did too.

"But Grandpa! He's got no where else to go and he's my first friend who does not look at me as if I'm weird!" yelled Ben back. Grandpa Max's glare strengthened. Gwen sat there quietly not wanting to get involved since both guys were yelling at each other. Kevin, on the other hand, had looked down to the ground in shame.

"Ben…I have put up with all of your troubles ever since you got the omnitrix and I am not going to have a criminal in this RV," said Grandpa Max grimly. "Why do you want him to stay so much?"

"BECAUSE I LOVE HIM!" shouted Ben. Both Grandpa Max and Gwen looked shocked.

"W-what?" stuttered Grandpa Max. Ben was heaving, Kevin was also in surprise as well as Gwen.

"I love him," Ben said firmly. "Ever since we made love for the first time," he confessed.

"The first time?" asked Grandpa Max. He seemed to have calm down now and Gwen covered her mouth with her hand. Kevin smiled at Ben as he smiled back.

"Yes. I'm not gonna hide anything anymore. I'll tell you everything," offered Ben. "I owe you that much…or perhaps more," Ben said. Grandpa Max slowly sat down again as Ben dropped into his chair.

"Tell me from the very beginning….and make sure you don't leave anything out," Grandpa Max said firmly. Ben took a deep breath.

"Okay well it started off me meeting Kevin at the arcade, and well, one of the staff there was being a jerk and I just made fun of him and Kevin helped me out a bit. Then a couple of street kids came over and cornered Kevin and me trying to be hero I turned into XLR8 and kicked their butts," said Ben. Grandpa Max's eyes widened.

"You went alien in front of them?" He asked. Ben shook his head.

"No, of course not. I just went to a little hiding spot and sped my way to 'save' Kevin. Anyway, after that I ditched Gwen after she told me not go with Kevin and well, I went over to Kevin's place and one thing led to another and we….ended up having sex," Ben confessed. He was blushing form the embarrassment in remembering that day.

"Go on," Grandpa Max said.

"So…after that I told Kevin I snuck into the Hotel VIP game area so I could play the new Sumo Slammers game that wasn't going to be out 'till Christmas and I getting in trouble for it and got kicked out of the hotel and etcetera. Then Kevin showed me the new shipping of the new Sumo Slammers game and we tried to steal one before the cops tried to-" Grandpa interrupted Ben.

"What! You got chased by the cops!" yelled Grandpa Max. Ben winced at the tone of voice.

"Listen!" Ben yelled back. Grandpa Max sighed and waited for Ben to tell him the whole story. "Anyway, we got chased by the cops, I turned into Stinkfly and ran away with Kevin (Ben put up a finger to shut Grandpa Max's mouth before he said anything) and after that, we both thought it was fun you know? So, anyway, Kevin offered to be 'partners' (Grandpa Max's eyes widened) n-not like that type of partners yet…but so I said yes (Gwen gasped) and well Kevin and I headed down to the station and Kevin swapped the tracks so the passenger with collide with the one that was transporting money then we'll make a run for it, and well, I refused…it's because I mean I don't want to be responsible for the peoples' death and Kevin that time didn't care (Kevin looked down in shame), so we fought and he absorbed the monsters in the omnitrix and you know what happened after that" finished Ben. Grandpa Max nodded and looked away from Ben. Kevin just kept looking down afraid that he will be sent to the null void again.

"But Grandpa, you have to understand," pleaded Ben. "I can't live without him".

"Ben…you're 10 years old. How can you be so sure that this is the person you want to be with? I don't care if you like the same gender but you're out your league," Grandpa Max replied softly. Ben's right hand played with his engagement ring. He may be a kid but he KNEW that he was in love. He doesn't know why but he just does.

"Kevin gave me this," Ben showed his engagement ring to Grandpa and Gwen. Both gasped at how beautiful and extremely expensive it looked.

"W-what? He gave you that ring?" asked Gwen. Ben nodded and looked at Kevin with love.

"He proposed," confessed Ben.

"Awwww," Gwen cooed. She immediately stopped when Grandpa Max glared at her.

"I can see you're very committed to Ben," Grandpa Max said to Kevin. Kevin was startled at first and stood up next to Ben.

"Y-yes, I am. I can't be happier then when I'm with him. But I am sorry that I haven't asked your permission to take his hand in marriage," Kevin said. Ben was slightly surprised how formal Kevin can talk.

"Kevin, can I talk to you outside? I want to have a private word with you before I can let you take care of my grandson," Grandpa Max opened the door to let Kevin go outside until he followed shortly. Ben and Gwen looked at each other and giggled at Grandpa's choice of words. Grandpa Max did say he was going to accept him. He just needed a private word.

"Alright…I wanna get a few things straight here," Grandpa Max said firmly. Kevin nodded obediently. "If you ever…EVER….hurt my grandson, I will personally march back here send you back to null void," Grandpa glared fiercely. Kevin winced at the tone. "But since you have proposed to Ben and seem very committed I will let you off. BUT make sure you don't step out of the line 'cause I'll be watching," warned Grandpa.

"You have nothing to worry about. I will never forgive myself if I ever hurt Ben and you can guarantee that I will send myself to the null void if I hurt Ben," Kevin promised. Grandpa Max's released the glare and softened.

"Kevin…I still don't appreciate you deflowering my grandson but if you show me that you are worthy to be my grandson's husband then I will…learn to trust you. But for now I am acting on Ben's behalf," Grandpa Max informed.

"Don't worry sir. I will not let you down," Kevin promised. Grandpa Max patted Kevin on the shoulder and smiled at him (a/n O.o). Kevin was shocked at the sudden mood change.

"Well, make yourself comfortable and you can probably share with Ben when sleeping. But no 'playing'," warned Grandpa Max. They both went back inside with smiles on their faces. Ben smiled and jumped into Kevin's arms and snuggled in. Kevin tightened his grip around Ben and hugged. Gwen cooed again while Grandpa Max rolled his eyes.

End of Flashback

Grandpa Max and Gwen were cooking DECENT FOOD for once, probably because Gwen forced Grandpa Max to let her cook "edible" food. It was good for a change for once. Ben and Kevin were outside snuggling enjoying each other's company as well as the cool breeze. They both shared a kiss until Ben started deepening it and made it into a make out. Kevin was playing safe in case Grandpa Max was watching, he didn't want to look like some pervert grabbing Ben's ass and massaging it. Ben moaned and demanded for more by grabbing Kevin's hand to place it on his ass so he could hold him up. Kevin moved his hand away and broke the kiss.

"Ben no…we can't, plus we're outside. And your Grandpa might be watching (which he was)," said Kevin softly. Ben pouted and tried to seduce Kevin once more. Ben kissed him and Kevin pulled away gently.

"Kevin," whined Ben.

"Ben…don't. Save some for when we are truly alone," purred Kevin. Ben looked down sadly since he couldn't get any LOVE from Kevin. Kevin being a sap he was, he kissed Ben softly but only for a moment until he pulled away. Grandpa Max smiled at the amount of responsibility showed by Kevin.

'Maybe Kevin is compatible with Ben,' thought Grandpa Max. He went back to helping Gwen to cook and not before long lunch was ready. They all ate quietly outside and chat a little bit as well. Kevin thought it was nice to finally belong to a family of group. He felt isolated ever since he was abandoned being a freak and all really put him down. Well, until he found Ben that is. Kevin never thought he would ever be happy again but happiness only comes when good things happen to you and that good thing is usually (perhaps always) love.

As the Tennyson's and Kevin started traveling back to Bellwood they all got closer to each other. Kevin seemed to be earning Grandpa Max's trust (as well as Gwen's) slowly. It was good progress and everything was going smoothly. After driving for one whole day they all stopped by a city to get some rest and refreshments. Grandpa Max decided that they're going to stay at a 4 star hotel (since Ben blew up their opportunity last time). To finally sleep in a real bed was good stuff. Grandpa Max decided to pay for two rooms, one with a queen size bed and the other with two single beds. Before everyone made their way to their rooms Grandpa Max pulled Kevin to the side for another private word.

"Kevin…you have been very responsible in your behavior and I think it is time for me to trust you with Ben without my supervision. So I have paid for a room that has a queen size bed and I thought you could some alone time," said Grandpa Max. "Even though you already took his innocence away," he muttered. Kevin shifted uncomfortably.

"Uhm...well I really appreciate all of it sir…but can I tell you something?" asked Kevin.

"You can call me Max. But yeah…you can tell me something," said Grandpa Max softly.

"Uuhm…well I'm sorry for taking…action before actually committing myself to Ben…if you get my drift," said Kevin awkwardly.

"Well I wish it happened way later on Ben's life…like when he's married (Kevin winced) but I guess he wouldn't have loved you if both of you haven't slept together," sighed Grandpa Max. "But…it's been done and we can't change so we have to live with it although we don't have to look at it negatively," he reassured. Kevin sighed in relief.

"Thank you so much sir. I won't let you down," Kevin promised.

"I said you can call me Max. Don't think you're being rude by calling me that," Grandpa Max smiled at Kevin reassuringly. Kevin sighed in relief. Once both guys came back to Ben and Gwen they all headed to their rooms. Kevin and Ben went inside the one with the queen sized bed while Grandpa Max and Gwen into the other. As Kevin stripped into his boxers (Ben's pajamas are too small) he settled on top of the bed and turned on the TV. Ben was in the bathroom and felt really, REALLY in the mood for sex. Ben looked at the junior bathrobe that was provided in the bathroom and having a sexy thought, he stripped down to nothing and put on the bathrobe.

"Oooohhhh Kevin…" Ben sang. He appeared in front of Kevin and placed his hands on the bottom headboard. Kevin looked at him slightly shocked at how direct Ben was. "Don't you want some sugar?" seduced Ben. He pulled down the side of his robe slightly to reveal a tiny chunk of skin. Kevin turned off the TV in a second to savor the sight in front of him. Ben took a few steps back and dropped the bathrobe. Kevin's jaw dropped. Ben slowly crawled over to Kevin and slowly tugged onto Kevin's boxers. Once both were naked Kevin swapped their position and dominated over Ben. Kevin's erection was poking against Ben's thigh. Both moaned at the skin contact.

"Oooh God Ben…I really can't resist you," groaned Kevin. They both kissed passionately while feeling and groping each other. Kevin pushed his hand under Ben's butt cheek and grasped it. Ben gasped which gave access to Kevin to plunge his tongue into Ben's mouth. Their tongues overlapped each other fiercely as they rub against each other. Kevin broke the kiss to start kissing down Ben's neck until he reached his nipples. Kevin sucked on each of them while Ben moaned loudly. Ben swapped their positions so he could give Kevin a blow job. He trailed kissed down Kevin's penis from his toned abs. Ben started kissing Kevin's long hard penis that stood up so much that it looked like it hurt. Ben licked from the base and up to the tip repeatedly while Kevin groaned in ultimate pleasure.

"Oh God Ben! Please…just suck it already!" groaned Kevin. Ben smiled as he sucked the tip for a bit until swallowing the whole member. Ben sucked really hard as if he wanted to get anything off the skin. Kevin wriggled under the pleasure as Ben sucked his dick as if it was a lollipop. Not before long Kevin came inside Ben's mouth. Surprisingly Ben drank it all, a whole 2 weeks' worth of sperm (A/n apparently men produce shit loads of sperm per minute). Kevin panted breathlessly while Ben wiped the dripping sperm from his mouth.

"Was that good, Kev?" Ben asked 'innocently'. Kevin caressed Ben's cheek and nodded still panting. "What do you want now?" Ben asked. Kevin pushed Ben down under him and kissed him hard. Ben moaned and wrapped his arms around Kevin's neck and pulled him closer. Kevin broke the kiss and gave three of his fingers for Ben to suck on. Once it was wet with saliva, Kevin pushed each finger slowly inside Ben and slowly fingering him. He removed his fingers and Ben whimpered at the loss of contact.

"Don't worry, sweet heart. You'll get something way better than my fingers," purred Kevin. Ben moaned and ached into Kevin's touch. Kevin positioned his cock into Ben's hole and slowly pushing in. Ben winced but he and Kevin had done this before so it didn't hurt as much as the first time. All he couldn't wait for was the unbelievable pleasure he gets when Kevin hammers into him. Kevin spread Ben's legs really wide and pushed inside the last half in one swift motion. Ben gasped and moaned loudly and wrapped his legs around Kevin's waist. Kevin started thrusting slowly until his fiancée begged for him to go faster.

"Ahhh uhhh deeper…harder…harder…faster…faster…harder" moaned Ben. Kevin tried to thrust as fast and hard and deep as he could. Ben pushed Kevin under him to more of Kevin's cock could be buried into Ben's hole. Kevin thrust upwards while Ben bounced on top of him and they both met each other in the middle when both pelvises connect. "Ahh uhhh harder, Kevin, harder! Faster…faster!" demanded Ben.

"How can I thrust harder into if you're on top of me" Kevin groaned. Ben moaned loader and loader as the pleasure was overwhelming. Kevin's cocked became harder as Ben moans turned him on. Kevin continued the rhythm until Ben came onto his chest. Kevin pushed Ben under him and thrust harder and faster into Ben pummeling him into the bed that was covered with soft sheets. Ben held his legs (under his thighs) and pulled them wider to help Kevin give more access. Until Kevin was on his last thrust they both moaned as Kevin came for the first time and Ben for the second. They both collapsed panting trying to catch their breath as they held each other. After they regained their oxygen both boys snuggled into each other smelling each other's scent. Not before long they fell asleep in each other's arms living in complete bliss. Hopefully this will continue until they officially get married.

End of Part I

What did you think? Was it good? I hope it was :D anyway well this fic will still continue its just that I thought I would write 'End of Part I' because I was reading books that had end of part one and end of part two and stuff so I thought it would be cool to put it in my fanfic. Anyway the next chapter is the beginning of part two which will be a time skip where it is take place in five years later (Alien Force) :D so hopefully that will be up next week. And again I'm sorry if I hadn't been updating for a while. Just a clash with my school assessments so yeah. Anyway READ & REVIEW. This is what keeps me going :D