6 months. However, it only took about 3 for you to start imaging your future with him. You'd buy a house, make a decision about a new car, dinner with his friends, get married, have a dog, have kids, and grow old together. But that isn't going to happen now.
Now? Your strangers. Two people who once were so close and made each other smile so much it hurt, strangers. Strangers that have a hard time even passing each other on the street. A mind with a million memories and phone with hundreds of photos. You wish you could erase the memories like you can the photos but those memories are the one thing you can keep as your own, the one thing you have 100% control over.
IT ISN'T THE END OF THE WORLD. It may have felt like it, hell, it may still. However, your a strong, independent, hard working, beautiful, talented women. Yes, everyone seems to be telling you that but here's the thing, it's the truth. You've made it this far in life and you've got so far to go. This is just another (hard and painful) lesson learned that eventually you'll look back on and have gratitude for having the chance to love someone like him, for loving so heartedly, even when he wasn't capable of loving you back. It's not that you weren't worth loving. You were worth every ounce of love imaginable but he wasn't ready. It didn't work for whatever reason and that's okay, but you will find the guy that it is supposed to work with, the guy who will appreciate you for everything you are and everything you do. The guy who will never stop loving you or who will never leave you feeling stranded and broken-hearted.
Breathe. Go out and enjoy something that you truly love to do, surround yourself with happiness, and most importantly, find yourself. Your story isn't over, you have several more chapters to write, many more people too meet, and many places to see. You've got lessons still to be learned, lessons to teach, and smiles to put on strangers faces. So it didn't work out. I'm not trying to make light of the situation or how bad it makes you feel. But in the words of Taylor Swift, "Hang on it gets easier, and then it gets okay, and then it feels like freedom."