Bella was about to spend two weeks at Helena's home. She knew Helena would use any possible occasion to make Bella bursting to pee, but Helena seemed so pleased when obeyed that she would always try her best and hold.
When she arrived at Helena's home, she only had few contact with her parents. For sure, Helena wanted Bella to herself only. Bella was allowed to pee at noon, just after she arrived. After eating, and when Bella had finish her two big glasses of water, the girls decided to go to the theater. Helena bought Bella a huge soda drink, and another one for herself.
"Don't worry", she said, "it's low on sugar and that tastes so good!" When she saw the drink was reaching the half liter mark, Bella realized why she was given it to drink. There was no reason to let her bladder efforts down, even in holidays, so she drank it, and in less than 45 minutes. In the middle of the movie, at a less interesting moment, Helena leaned toward her. "So, what do you think about it?"
"The movie?" Bella asked " it's interesting, but..."
Helena interrupted her:
"Not the movie, idiot, the drink. What do you think?" Were they here for the drinks or for the movie? She smiled at the surprising question.
"A bit heavy, but absolutely delicious! You were not wrong" She whispered.
"I've had enough of mine, you can have mine. No waste, you remember? And I paid it for you" The room was deeply dark, but she could guess the smirk on Helena's face. For sure this girl was a devil! Having to obey, Bella took the cup. It was really heavy! When she looked inside, she saw Helena had drink less than a fourth of it, and definitely realized that they were here for the drinks.
When the movie ended and Bella got up, she felt the soda weighting in her abdomen. Her bladder had begun the filling procedure, and Bella had to bend a little when she realized it for the first time. Not that it was difficult to hold, but her bladder was feeling quite fast. Helena didn't miss it, and sarcastically asked:
"What is it, darling, are you feeling uncomfortable? That's what happens when you drink too much sugar drink!"
"Nothing, just stretching after being sit down for so long" she lied.
"Good, then I suppose you can wait me while I go to the ladies room?" Bella nodded.
"I'm fine, you can go." She didn't know when she would be able to go to the toilet next time, and that could have been her last chance for a few hours, but she decided to act as Helena wanted.
Helena came back and asked Bella if she wanted to go shopping. Of course, she accepted, and they went through a lot of cloth shop, where Bella would always have to try belts and tight clothes following Helena's advice. Going through the streets, they also crossed numerous street-shops where they bought some more to drink. Helena was so kind that she even offered most of her drinks to Bella. "So kind of her" she though sarcastically "at such a rate, it won't be long before I'm getting desperate". The drinks mix was even worse for her bladder, with the soda from the cinema, coffee, Helena's half bottle of water and the full one she had been given. At the end of the afternoon, Bella could definitely feel her bladder with everything that it contained, and with more that was surely to come. She was about 6 on desperation scale, and hoped Helena to slow the drinking speed, as she was still filling up with pee.
When they returned to Helena's house, it was already time for dinner. Helena's parents were having dinner with them, so Bella made her best to hide her need, mostly succeeding. When Bella was about to look for a glass of water, Helena stood up and proposed to bring it by herself. Helena finally came back with a tall glass of water, which Bella began to drink after thanking her. In less than a second she realized by the taste what was in her glass: it wasn't water only, but it was mixed with diuretic, Helena's diuretic. She couldn't be wrong, Helena would often give her diuretics to weaken her bladder when it was already full and stretching and she knew exactly the taste.
Bella stopped drinking, and looked at Helena, who looked at her innocently in front of her parents. "What is it, Bella?" asked Helena's mother "Is it the water? You don't have to drink it all right now."
"No, that's nothing, it's fine" answered Bella. Helena had planned it all, for sure. They were having a very salty meal, and Bella had to drink the whole glass, which was immediately refilled by a very servant Helena. And then a third one, which Bella avoid drinking.
At the end of the meal, Bella bladder was being filled at full force by her kidneys, producing an impressing amount of pee in a short time. At the end of the meal, Helena proposed to help with the dishes, including Bella to help with her, an offer the poor girl couldn't politely refuse. Helena even made Bella drink the third glass, pretending to "avoid any waste" in front of her mother. Bella looked at Bella in a pleading way, but it was clearly an indirect order. Both girls were washing the dishes, Bella with a tensed expression on her face and her legs twisted as her kidneys were voiding any remaining liquid in her system, directly in her bladder. Maybe if she could endure the filling process, she could get used to her bladder fullness and handle the few remaining hours?
[Helena seemed not at ease as well, at least she was different from usual, slightly bent forward. Helena was less used to pee holding than Bella and she had had a lot of drinks during the dinner, being very thirsty. With all of what she had drink, her bladder must have gone from a not very full state to a dangerously filling one.]
When they were done with the chores, the girls went in Helena's bedroom upstairs. Bella was so turned on by the way she had been trapped by Bella. Her friend was so smart! Yet, they would have to talk about the consequences on her bladder, now very painful and full. She could feel her inner muscles getting tensed, and her bladder trying to expand. She had to take small steps toward the bedroom, with some moans escaping her from time to time.
"Why did you do that?" asked Bella immediately after sitting down on the bed and grabbing her crotch. "You trapped me!" Bella tried to look offended, but she knew she was bad at this.
"Don't try lying to me, I can see in your eyes that you love that" She came next to her, caressing her thigh. "You love those "no-way out" situation. You should have seen your face when I asked you to drink the third glass! You're so funny"
And with that she began a tickling session, painful for Bella, who had to struggle with her hands pressing on her pee hole to prevent flooding the bed. '"Wha...Please stop Helena! ... Haha! ... I'm very full! Stop this!!" she said while in laughter. Helena enjoyed it, but eventually stopped tickling her friend.
"Phew! That was close! Naughty girl, you nearly made me wet your bed" joked Helena.
"If this happens, you know who will get in trouble, and that's not me".
"Stop saying such things, I'm still in control when I'm not tickled. Now I'll have a shower"
"No pee in the shower!" warned her friend.
"I'm not that desperate yet". "Of course I am", she said to herself.
It was a hard time showering with a full bladder, but Bella always used this time to play with her bladder, slowly pushing until she could feel it hard, and her muscles getting tensed. Her "relation" with her bladder was at least as ambiguous as with Helena. She loved feeling her bladder tortured, but eventually she had to get relief. With her friend Helena, she loved sharing her fetish. Getting out of her toughs, she realized Helena was knocking at the door "Are you done now? I'm waiting to shower".