The only couple on this list who actually hooked up prior to the series ever starting, Grey's Anatomy kicked off the morning after Meredith and Derek went home from a bar together. Sure, he was married at the time - but that technicality was no match in the end for (sorry we have to say it...) the McDreamiest pairing on all of television.
[narrating] "At the end of the day, when it comes down to it, all we really want is to be close to somebody. So this thing where we all keep our distance and pretend not to care about each other, it's usually a load of bull. So we pick and choose who we want to remain close to, and once we've chosen those people, we tend to stick close by. No matter how much we hurt them. The people that are still with you at the end of the day, those are the ones worth keeping. And sure, sometimes close can be too close. But sometimes, that invasion of personal space, it can be exactly what you need."
Did you say it? 'I love you. I don't ever want to live without you. You changed my life.' Did you say it? Make a plan. Set a goal. Work toward it, but every now and then, look around; Drink it in 'cause this is it. It might all be gone tomorrow."