Telling your partner you accidentally set the earth on an irreversible path to destruction is not a comfortable subject. However, if you care for them, then you understand that he or she deserves to know they have roughly three minutes before being swallowed up into an abyss of infinitely dense spacetime.
The ideal way to address the subject is in a romantic environment, while walking on the beach at sunset, gazing into each others’ eyes after a fancy meal, or watching the lights twinkle on in one of the world’s great cities.
Unfortunately, it’s unlikely you’ll be in any of those situations. In reality, you’re lucky if your loved one is even close enough to your laboratory so you can run up and tell them the news in person.
But, if you have the good fortune to be addressing them in person, the first thing you should do is look deeply into their eyes and reaffirm how much you care about them. At the same time, remember the black hole is expanding as you speak. Be brief.
Once you make your feelings clear, lead into the subject gently by saying, “You know that secret particle accelerator I’ve been working on? Well, it turns out that just seconds ago I created a very small black hole. It’s not dangerous now, but–this is the scary part–in three minutes it’s going to engulf the entire earth and swallow all of us into oblivion. There’s a way to reverse it, but the internet’s being weird so I can’t look it up. I’m telling you this because I really care about you. On the bright side, we won’t have to get the transmission fixed. Let’s just spend these last few minutes together.”
Keep in mind that the most difficult part of telling them will not be the black hole itself, but the fact this hole will suck up the entire earth and end both of your lives. Also, make sure they know this is not a joke.
They may or may not have a chance to respond, but if they do, it will likely be garbled nonsense because of the mental shock. They may laugh, say I love you back, or feel a vague sense of gratitude and admiration that you had the guts to tell them in the first place.
You should be grateful for their confusion, because it will allow you to spend your last moments together in relative peace, regardless of what your relational status was beforehand. It will be like the time your puppy was adorable and sleepy after she got spayed. The most important part is that you enjoy your last few moments together.
Should you have to send a text message instead of telling them in person, use the bad news sandwich method, putting the unpleasant revelation of the black hole between two happy bits of news. Here’s an example: I love you and I’m so sorry but I just created a black hole in my laboratory and the earth is going to be destroyed. :(. No need to worry about making dinner tonight. Love you always.