[ WP ] When two people fall in love , they receive an object that is the physical embodiment of that love . It changes as their feelings change towards each other and destroying it can have drastic consequences . How does this change the nature of relationships ?

Trends are everything. My parents met one day on an antiquated site called `` Okay Cupid'' or something to that effect, and apparently they hit it off, because 2 years later they were married. A few years after that they had me. 
 
 I've never been one much for dating technology, and despite all the scientific research to back it up, I always thought it was some kind of gimmick. How on earth could it be possible to quantify love, hate, and all the other complex human emotions? I did n't buy it. So, I stuck to the old fashioned method. 
 
 I met Dagney through a coworker at a dinner party, and something about us just clicked. One moment we were shaking hands after an introduction, the next moment we were absolutely enfactuated with each other talking long after most of the guests had left. Five months later I asked her to move in with me and she accepted without hesitation. What we had was incredible. She was everything that I had hoped for in a serious relationship; a positive compensation to all my faults, as I was to hers. I was a bit messy and disorganized, while she tended to keep things clean and focused. She was excitable and adventurous, eager to dive headfirst into a new project, while I was more wary and careful about new endeavors. We were good for each other in more ways than I can count, and I was seriously considering asking her the big question. 
 
 We were watching TV on our tablets together one night after work, and a during a break in the show, an advert came up for a popular new `` Emo-Tech'' that claimed to be able to measure and characterize the emotional relationship between two or more people. The science behind it apparently functioned on newly discovered compounds that functioned as pheromones in humans, and when paired with the subject's genome along with a scan of their endocrine system, it was able to determine the emotional state of the linked parties. They claimed it was fairly accurate in evaluating the relationship, and was able to predict the statistical chance of success based on a database the company had compiled during development. 
 
 I had started to make a joke about the whole thing, until she started to say that we should sign up and get one. Of course, I could n't say no, because what was there to fear? We were doing great, and nothing in our relationship said otherwise. 
 
 In the first three weeks the little sphere brought us closer than ever before. Everything it displayed was spot on, and indeed matched our feelings exactly. One day I came home from work and sat down to watch the game, and out of the corner of my eye the normally pink sphere flickered for fraction of a second. I almost did n't catch it. I figured it was just a glitch, but it was the first time that I had noticed any change in the color of the sphere since we got it. When she came home, during dinner, I decided to mention what I had seen, but brushed it off as just a figment of my imagination... 
 
 It flickered again the next day, right when I was looking at it, and again in the next. 
 
 It had been working perfectly up until that point, so what could be wrong? Dagney and I had long conversations about it, but it seemed like all the confidence I had in the relationship was somehow shaken by this damned sphere. A few weeks later I woke up to find that the sphere had gone from a light pink color that occupationally flickered blue to a flat black color. 
 
 She moved out two days later. 
 
 We have n't spoken since. 
 
 edit: half way through I decided that it would take too long to try to develop the story completely. I was thinking about this from a single sided perspective in some relationships. Please forgive my laziness. 
 
 tl; dr - A couple gets a device that results in one or both parties grenade the relationship because the device amplified their own insecurities.
