Since I no longer engage in romantic relationships (it never works out) I live vicariously through relationships of others. Some people stay together for a long time, others move on amicably, still others are left with wounds. The people who stay together give me hope for the day I do meet someone that's as interested in me as I am them. People who move away from each other but stay friends show me that I can make mistakes without becoming pained so I'll be able to take a chance meeting someone new. But people left hurt reaffirm my belief that romance is dead, there's no point in loving another human because they'll just leave you bleeding in the street, so to speak.
Seeing a friend of mine hurt reminded me of my own hurt years ago. We had only been seeing each other for 6 months (same as my friend and his ex) but I went from on top of the world to drowning in less than a second. But why do relationships end so quickly? Well, after about 6 months you pretty much know someone. Wait, that was how long these relationships last. Yeah, the adrenaline you gain when you're around that special person is awesome, you become chemically dependent on that person. Then you get used to them, get to know their traits, your brain adapts to them being around, and bam! no more chemical kick. If you find that you don't like their traits you leave, they find out, they leave, simple. Depending on the mesh things can end amicably or be completely destroyed.
The bigger picture is the fact that this was only 6 months of your life. You could have lived 25 or 50 years, a whole 6 months is not going to kill you. You may be sad now but stand up, dust yourself off, and move on. Don't let a mere 6 months consume every fiber of your being until you're unable to stand yourself. Some people are worth spending time with, others aren't. If someone is unwilling to bury a hatchet they aren't worth the time being sad.
