Jason put on his dark blue trunks and Janet put on her pink one piece. Janet's mom brought them to the hot tub and laid out their sandals and towels then let them have their fun in the hot tub and even let them have a pool/lake toy or two to play with. The two kids were having some fun splashing a bit for a second, but as the bubbles got a little more intense bringing them below the surface for a second. As they came up Jason said "I think they made the bubbles... wait..." Jason was unsure as his voice seemed deeper and he was sitting instead of standing yet the water was now at his chest instead of being closer to his head. He looked at himself and he looked hairier and longer. He had yet to notice his trunks had grown with him... neither did he yet notice his little buddy having grown and matured as well.
At the same time Janet surfaced, and noticed her shoulder length hair was now to her back along with the two lumps on her chest existing. She didn't know the letter were B's but she thought her swimsuit was kinda cute. Hers now being a white bikini with a pink flower on her right chest. "Wow... We're older Jason."
Jason nodded and said "Yeah, think the hot tub caused it?"
"It's possible." Janet said as she started to notice his eyes wander over to her chest and said "Yeah, my swimsuit changed. Isn't the flower cute?" she saw Jason nod and look a little flustered. Then noticed he was paying attention to her body a lot more, and with her mind more mature and willing to ask questions instead of just pouting and being angry asked "So Jason, Why don't you want to talk at school anymore?"
Jason turned away and blushed a bit as he said "Well... you were just kinda... Well..." Jason's brain was getting a little overheated and he didn't want to hurt Janet's feelings especially now as his penis was starting to claim a decent amount more of his bloodflow.
Janet went and sat next to Jason and placed her hand over his arm and said "Even if it's just a stupid reason... You were just acting like a jerk for no reason and I want to know why... I'll let you examine my chest a little more if you tell me honestly." She said the last part thinking maybe it would convince him to say the truth.
It indeed forced his hand as he took a deep breath and said "I just wanted to have some guy friends. But... they saw you as icky so I couldn't be friendly to you... at school where they could see..."
Janet kinda chuckled a bit as she took Jason's hands and said "Yep, I think that is pretty stupid. Although I think if you treat me nicely they'll get jealous instead of mad." then she put them on her average breasts. Jason gave a small grope before the door to the house opened and Jason instinctuatlly withdrew his hands as their parents started coming out to join them in the large hot tub. As their parents looked and saw some teenagers in the hot tub without their children the dads got angry and ran over... And after a few minutes of terror and yelling they all cooled off, and moved the conversation inside to the living room.
Jason was sitting on the couch in his trunks while Janet kinda covered herself with a towel as she was realizing how much skin she was actually showing off.
"Alright... We aren't using the hot tub anymore. I'll try contacting the guy we rented this cabin from." Jason's father said.
Janet's mother said "We'll also have to change our sleeping arrangements I think... Having them sleep together as children was one thing, but... Well you know?"
Janet's father tried thinking and said "The couches and things aren't that comfortable, and we don't have any pullout mattresses or anything. How would the arrangement even work?"
After a somewhat uneventful dinner they decided for sleeping arrangements that...