Nothing lasts forever.
Remember all those promises that you made? Going on trips together, building a future by each other's side, and making it through all the highs and lows of life? News flash: It's not going to happen anymore. I know how you promised an eternity with each other but everything that comes also goes.
There is so much wasted potential between the two of you.
You know that point in a relationship where you're between friends and lovers and you stare at the other person, thinking, "Wow, I could fall in love with you." Yeah, that happens even after a breakup, too, especially when it's the first time you see each other in months—just when you thought you no longer remember the shade of brown their eyes were; suddenly they're right there in front of you. It's the same face that brightened your gloomy days, with the same lips you once thought you would never get tired of kissing. Then reality hits you: You guys have broken up. You will never be able to hold his face nor feel his lips again. You know you could've made it, something just went wrong along the way.
You are sorry.
You will be sorry for all the wrong things that you did in a supposedly right time, for being too much and never enough. You are sorry simply because you were not the right person for him, and you know you never could be no matter how much you tried. You are not the missing puzzle piece that they are looking for. You do not complete them, and you are sorry for that.
You were not meant to be.
Hanging out with them would make you realize how different the two of you are. You are on both ends of the spectrum, two lonely opposites who never really had a shot at forever. Maybe you make better friends or strangers than lovers. After all, two wrongs don't make a right, right?
You will always love them.
You will want what is best for them. You will want to see them rise to the top and you know that you'll be proud when that happens. You'll be grateful for having to get to know and love someone as great as them. You will always love them because they hold a special place in your heart. They might have taken a part of it when they left, but you've learned to be okay with that. In fact, it's theirs for the taking.