(This story is posted on the Literotica website. Do not repost anywhere else without the author's consent. This story is a bit different from my usual fare. To be clear, this is a story where the woman cheats on her man. But a lot of my usual themes are present. There is betrayal, seduction, and heartbreak. It features huge tits and big cocks. And don't expect a happy ending. This is a story about cops and criminals... such stories aren't always pretty. The good characters have shades of darkness, and the bad have shades of appeal. One other thing to point out, as it has come up from time to time, the villain of this story is quite arrogant. Over the years, I've noticed some readers bristle at characters like that, so be warned. If you don't enjoy stories featuring arrogant antagonists, this story won't be for you. So, for those who think they can handle a story like this, go forward.
Additionally, this story is a LONG one, even for me. You have my permission to skip around if you don't want to get too in the weeds. This story is a slow-burn over multiple chapters that ratchets up the tension until it explodes. Not every chapter features sex, but there are heated moments throughout that build up to the main event. If that doesn't sound like your cup of tea, just don't say you weren't warned.)
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Monica's fateful choice to submit to David, rather than continue pursuing a relationship with the man who loved her most, was devastating to Joel. But it would have been far easier for him if it had been a clean break. If she'd just ripped the band-aid off and removed herself from his life. But he still had to work with her knowing she'd succumbed to David's charms, and he still couldn't process it. The woman he was crazy about, one who had such incredibly high standards that Joel had been the only man in over a decade to get truly close to her, had all but dumped him a few short weeks after they finally started dating, before they'd even gotten to the bedroom, all so she could go and fuck another man instead. A man she'd only just met. A man they both knew represented everything wrong and rotten in their city. Sure, it was under the guise of going undercover, but she didn't seem to realize how emasculating it all was for Joel. And it didn't help matters that that excuse seemed increasingly flimsy as time went on. Joel knew Monica better than anyone... or at least he'd thought he did, as he now had to grudgingly admit that David's ability to charm his way into Monica's pants proved that the younger man may truly have a better, deeper understanding of her than Joel ever did. But Joel could still read her well, and as the weeks and months drug on after she began this undercover gig, he could feel her drifting even further away from not only himself, but from the person she used to be, changing in ways Joel was shocked to see.
Joel and Monica still worked together as partners in the immediate aftermath, but she was spending fewer hours in the precinct. The awkwardness between them was palpable, but neither ever openly acknowledged it after their initial break-up conversation. Irritatingly, she seemed more cheerful and relaxed than at any time he could remember, and most days she carried on in a downright chipper mood. Yet for someone who was supposedly driven by justice, she seemed far less engaged with actual police work. Her lightened workload allowed her to take more breaks than she ever used to before, and she spent them talking on the phone with David right there at her desk, or texting him every chance she got.
She and Joel were still ostensibly partners, but he was miserable and detached as this all happened right in front of him, unwilling to engage with the fact that Monica was spending almost all of her time with David now, not wanting to know any more than he had to. It was agony experiencing the woman he loved drifting further and further away from him and into the arms of an absolute douchebag. If she had any regrets, she didn't show it, giggling to herself, spending more time on her phone than a teenager as she excitedly texted back and forth with David when she was supposed to be doing actual police work. At times Joel had to stop himself from snapping at her to put her phone down, because, as he reminded himself, she was actually technically doing important work by maintaining her connection with the Delvecchio family's young scion. In the long run, it was more important than any of the tedious cases that crossed Joel's desk day after day. If she was aware of the slow torture she was putting Joel through, she seemed too distracted to care. She seemed not to know that Joel had very clearly seen what she was getting up to with David on a nightly basis, thanks to the video that smug prick had shared with him on the night her new undercover assignment began. She must have known David was taking a video of her deep-throating his shaft... Joel wondered if David bragged to her that he was sending the video to her partner. What her response would have been. That video... it was a side of Monica he had never seen. But here, in the cold light of day, he didn't acknowledge it, never brought it up. Never mentioned that Monica's new boy-toy was sending Joel disgusting and lewd videos to torture him. He just carried on as if he were completely naΓ―ve to what was actually going on. If Joel had been a little bit stronger, he might have confronted his partner. If he had been a little bit weaker, he would have snapped under the pressure. But as it was, he simply endured. The two partners just carried on in their own worlds, her actions causing the gulf between them to grow ever wider, ever deeper.
There were a few stray moments early on where even Monica seemed to realize she'd gotten a bit too distracted chatting up with David when they were supposed to be working. She would suddenly burst out into laughter at her desk as she gazed at her phone screen, before suddenly realizing that the heads of the cops at the desks all around had turned, noticing her outburst. These were the only times she acknowledged what she was up to with him, apologizing to Joel, explaining that when she went undercover, she really committed to the bit. So, she had to behave just how David expected her to. This thin excuse nonetheless gave Joel the slightest bit of hope that there was some chance that Monica could return from the brink. Some hope that when the job was done, despite all his fears, she was truly just playing a character, and doing everything she could to inhabit the role she was supposed to. But that hope was like a knife twisting in his heart, day by day. Monica retained enough clarity to at least be objectively aware of what she was doing, which seemed like a positive sign. But as the weeks went on, her behavior didn't change, and she was still more focused on texting with David with the ferocity of a lovestruck teenage girl. The only thing that changed was that eventually she stopped apologizing about it.
Joel's curiosity eventually got the better of him, and he started reviewing her reports when she wasn't around, checking to see if her actual casework had been affected by being under David's thrall. Sure enough, he found that her normally faultless, detailed, methodical police work had clearly taken a hit, Monica missing crucial details in her write-ups or sometimes skipping the reports altogether, indicating that she was distracted, her head elsewhere. The only case she seemed to stay on top of during this time was the ongoing investigation into the mayor's death, which had finally started moving after David Delvecchio injected some lifeblood into the case with his sworn testimony. Whatever she had done with David that got him talking, she was invested in following through, taking point on the case as they brought in and interviewed each witness David had provided them. Joel mostly stayed silent through this parade of interviews, studying his partner in the interrogation room, these moments with the witnesses the only times she resembled the Monica of old, fierce and no-nonsense. But he couldn't help but wonder if this diligence was also somehow spurred on by David. This case directly involved him, and in fact it was foundational to his immunity deal, so it was obviously important to him that it be done right. Monica knew that, and Joel wondered if this was driving her to put her full focus on it, to dot her I's and cross her T's and make sure it worked out exactly how David wanted it to.