Threads like this always make me feel like a dickhead, but like you say they're a nice change from the normal sorts of things that come up in here so I try to contribute whenever I don't feel too guilty for it
My girlfriend and I have been together for a bit over five years. We knew each other through school (Not that we really spoke or anything then, just saw each other around and what not). A few years into school when I was about 15 we gradually started talking and what not and eventually it just all sort of clicked into place. Being the quiet and intensely shy person that I was (It's gradually getting better) I probably never would have stepped things up, so it was fortunate that she felt the same way, and did so instead
Recently we've both been insanely busy with Uni, but earlier in the week we both spent hours at uni just hanging out and talking about nothing much in particular, despite the fact that we both had stuff we really should have been working on. It was great