How long did you think our relationship would last when we first started dating?

That's sad.I have never had any such experience.I don't have any girlfriend.

Same here!!!

I have been in the same situation as you are in my past many many times...of course first cut is the deepest until I get used to it then she came into this world and I didn't know we have the same feeling for each other and later on get married...Now we are on our 19th year and still in love with each other... So don't get disappointed there will always someone which is the right one for you...have patience, pray,,,and believe,,,

I never knew my wife would be my wife until about a year or so in. We dated for two years before we tied the knot.

You never really know that. you don't know if the person you are dating will be the person you will marry and spend the rest of your life with or the person you marry will be yours forever, things just happen, love just happens and if you are looking for love and it is something mutual that is the best. Just enjoy the moment and make the best out of it.