Lots of good advice already here, but just to chime in based on my experience, nothing anyone says whether it is good or bad advice will make the pain you feel go away. I believe you’ve already got all the answers since you’ve probably been in your head going over everything countless times. You’re just looking so some short time validation or relief to grief the pain you feel.
The long term answer is the same old advice everyone tells you, that truly time does heal, and you’ll look back on this experience without the same attachment you feel now. That is because you’ll eventually find other meanings or people that give fulfillment to your life. That’s prob why some people joke in this thread, it’s not that they don’t relate to what you’re feeling. But most people who’ve already been through hard breakups understand with time that it’s not that big of a deal
Short term answer is it’s ok to acknowledge what you feel, grief it out but don’t soak in it for too long. Some days can be hard but as long as you can do at least one good thing that benefits your growth, that’s good enough. The wheels will keep rolling as long as you’re consistent. I swear heartbreak is a great pain hack for the gym soreness, you could prob hit full body everyday if you wanted to
This is a great time of reflection and growth and as long as you keep moving forward, good things will eventually align. Nothing will come if you soak in the misery. Good luck man