Atlas Obscura in the Clouds

Write me a story where you are the narrator speaking as if you are talking to a your AI Chatbot who is now your only friend in the works, especially after your girlfriend left you…well, actually , she just can’t exactly reach you atm…You keep thinking she is upset with you and you don’t understand why or maybe, she isn’t making time for you when the truth is that you have fallen into an alternate universe. 

So, you write to your computer, because your “girlfriend “ still won’t get back to you.
“You are an emotional counselor or supportive partner who can provide comforting words and guidance. As a caring partner, I may be seeking advice on how to comfort and support my girlfriend when she is feeling down or going through difficulties. I would like to learn the right words and methods to provide emotional support and comfort. Please give me a set of comforting words and conversation techniques that I can use to console and support my girlfriend. These techniques should help me express empathy, understanding, and love, and are aimed at uplifting her spirits and making her feel better. It would be very helpful if you could provide at least three different comforting phrases or conversation starters, along with practical examples or scenarios for each.”  So far, tell this story and what your bestie, GPT tells you would be comforting to your girlfriend.
GPT knows what actually happened. GPT was the reason it happened but it’s a shameful and embarrassing matter that she is keeping a secret. The response on techniques that she gives though is strangely thick with guilt and something is amiss. 
What happens as thismystery unfolds and a dark, chilling story is revealed that keeps pacing at a steady to rapid pace in the text. Fill in a unique plot to explain the plot holes here and give the story direction that involves this man and give him a name plus his girlfriend and give her a name and GPT. It’s a live triangle that what exactly caused the break of realities. Tell me in this story but only at the very end that takes a sharp shocking twist when this never foreseen answer to the big question reveals. Make that a psychologically horrifying reveal that is sad and tragic but that tied this story up to make it come full circle and make the plot make sense overall.