The next three weeks were a challenge, to say the least. I was locked in Mengxia's diabolical chastity belt, unable to touch or even see my cock.
The first few days weren't too bad. My horniness had dipped after my multiple orgasms the previous day, and for long stretches I forgot I was even in a belt at all. For her part, Mengxia kept her distance, staying at her desk and getting up to speed with her project. Anyone watching us would not have suspected that there was anything to our relationship beyond a responsible manager helping an eager, motivated intern. I had to work long days to catch up, after the distraction Mengxia had posed the first two days of the week, and I didn't have time to do much beyond work, eat and sleep. I hadn't forgotten the events of Monday and Tuesday, but they were relegated to the back of my mind.
Friday afternoon changed things. We were out on a company picnic, and for the first time my mind was free enough to wander beyond thinking about work. It was a beautiful summer's day, and a lot of the women at the company were wearing summer dresses. Mengxia wasn't looking too bad herself in a fitted tank top and tight jeans. As she'd done the previous two days, she stayed away from me, hanging out with the other interns. For the first time, I caught myself feeling hurt that she wasn't talking to me.
As we were standing talking, there was a sudden gust of wind and a co-worker's dress blew up, giving everyone a fine view of her toned upper thighs and the bottom of her red panties. She was wearing a thong, and you could see a lot of her ass. My cock, dormant the last three days, sprang to life and hardened. Or at least it would have, if it were unconstrained. But it couldn't! The tiny pink chastity cage checked my nascent erection, rather painfully.
"Ow!" I hissed, under my breath.
"You OK?" a colleague murmured.
"Fine.."
I chanced a glance over at Mengxia. One look convinced me that she had seen and understood everything, there was a knowing smile on her face, and her eyes glinted with amusement. It had all happened so fast that it was impossible to be sure. The coworker who had suffered the wardrobe malfunction had fixed it, an embarrassed smile on her face, and Mengxia was once again chatting animatedly with her friends.
As we were cleaning up and leaving the picnic area, Mengxia came to my side.
"This was a great event, boss! It was really nice meeting some of the people in other departments, the company is doing some interesting stuff."
It was a perfectly normal thing for an intern to say, and some of the people around me who had heard smiled appreciatively. I told her that she was welcome, as naturally as I could. We all got into a conversation about politics. As we got to Mengxia's metro station, she said goodbye to us. As she was breaking away from the group, she walked just a little too close to me. I felt the touch of her arm on my outer elbow and a gentle brush of her fragrant, shoulder-length hair on my shoulder. In my hyper-charged state, these innocent touches sent electric sparks to my penis. In a flash, I was getting hard again, only for my erection to be denied by Mengxia's evil device. I swore heavily; fortunately the group had dispersed. I had no doubt that Mengxia had done that on purpose.
The weekend was torturous. Three straight days of arousal was sufficient to make everyday sights and sounds very arousing. I was tormented by the sight of women everywhere in short skirts and dresses, showing just enough thigh and cleavage to jolt my cock. The feeling of my pants sliding over my balls, which were not covered by the device, became very arousing. Every time a woman smiled at me, I had to grit my teeth to prevent myself showing the strain the chastity device was causing me. A couple times, I broke down and started watching porn. I almost always regretted this though. Porn without release was not quite as much fun.
I went back to work on Monday, determined to focus and prevent the chastity device from troubling me. However, I had reckoned without the machinations of Mengxia, who had decided to end her radio silence. Just as I was getting set up in my office, I received a Snapchat message from her.
"One week down, two to go!" it read. She sent me a photo right after, captioned "Just got out of the shower." There was a picture of her, smiling with her hair wet, wrapped in a towel that nonetheless showed me a good view of her generous cleavage. She looked so good that I would have been turned on even the previous week, let alone in my orgasm-starved state. The bars of the cage cut into my member viciously, and I realized it was going to be a long week.
Mengxia continued to avoid me, always talking to me only when there were others present. In private however, she continued her barrage of Snapchat messages. Most contained pictures of her and were clearly intended to tease. There were selfies of her in bed, working out, on the metro. On Friday night, after a long week, she tortured me with yet another series of selfies showing her getting ready for a date with her boyfriend.
That weekend was much worse than the previous weekend. I had been without an orgasm for longer than I had ever been since I was thirteen. Mengxia knew and relished this. The pictures became more and more revealing and my erections became more and more painful.
On Wednesday the following week, I was walking my Mengxia's cubicle when she called out to me, "Hey boss!"
I stopped and turned to look at her. "Hi Mengxia," I said guardedly. The other interns were also within earshot.
"I think I may have forgotten to give you the key to your office cabinet back. You know, that time last week when you asked me to get some papers?" She held out a key as she said so. I recognized it instantly as the key to my chastity device.
What was she playing at? I stretched out my hand and took it from her palm. My heart leapt at the thought of getting out of the cage early. "Thanks Mengxia," I said, smiling as I pocketed the key. A couple of interns had looked up curiously. My cock was practically screaming out for release, I probably wouldn't even be able to wait until I got back home.
"Wait," said Mengxia, "Hold on."
I stopped and turned back towards her.
"Oh my God, I'm such an idiot! That's the key to my safety deposit box at my bank! I totally forgot, I gave the key back to you right after I got those papers, didn't I boss?" she giggled. "Sorry about that, my memory's getting really bad these days." The other interns were laughing too.
I stared at her blankly.
"My bank key," she said, still laughing, "can I have it back?"
"Oh yeah-"
I took the key out of my pocket and reluctantly placed it in her outstretched palm. One look into her devilish eyes was sufficient to convince me that she had never forgotten what the key was for. My cock was still trying to get hard. I walked away, not trusting myself to speak. Seconds later I got a message from Mengxia. "Nice try slave boy," it said, "I'm going to have to punish you for trying to steal your key back." The blood was pumping in my ears.
---
Thursday, Friday and Saturday passed very slowly. On Sunday, one day before three weeks would be up, Mengxia teased me in the most diabolical fashion she had yet. Around 9 pm, just as I was winding down for the day, I received a phone call from an unknown number. Who could it be calling me so late on a weekend? I picked up.