I am in the same situation!!! I came out of a relationship almost 6 months ago. I met him completely randomly and we started talking (he also came out of a relationship around the same time I did). At first all we did is talk about our exes, but after a short while that quickly changed to getting to know eachother. We both knew he was only in town for a short amount of time (about a month), but in that month we talked everyday and even met up twice (the second time a date!).
He is an amazing person, everything Ive always wanted in a guy but never thought existed. He finally left town last week, and I look back to this last month as one of the happiest of my life. I met an amazing person, who I really felt I had a connection with. Unfortunately, I know he's now on the otherside of the country and it isnt anything he wants... but like someone said before I keep telling myself if its meant to be it will... just like chance brought us together once, if its meant to be we'll find our way to eachother again. I know it sucks, I miss him a lot.. and lately we havent talked as much because he is busy in his new situation accross the country, but i like to think at the very worst, I get to take with me the great memories I have of that short time I knew him, and a much greater appreciation for myself and want in a guy. As much as I want something to work out between us, even if it doesnt I care about him enough to want him to be happy and move on without making it more complicated than it has to be.
He helped me get over my ex, and Id like to think I helped him too... and I will NEVER forget him. Its wonderful that sometimes, we meet people randomly and for a short period of time that can make such an impact on our lives