Your loved one falls into a coma. Do you start dating again?

Someone mentioned the anime "Kimi ga Nozomu Eien" earlier in the thread; it's the first thing I thought about after reading this topic's title.

The story plays out a bit like this:

Spoiler:

A guy starts dating a girl in high school. One day, when said girl is waiting for the guy, she gets hit by a car. Several years pass; the girl is in a coma. The guy is now dating her best friend, the girl who helped him out of his depression after the accident with his girlfriend. However, the first girl eventually wakes up, realizes what's going on, and drama ensues. The guy ends up choosing his new girlfriend over the old one, although it's not necessarily because he stopped caring about her. The old girlfriend accepts the fact that things have changed, and everyone moves on with their lives.

I honestly don't know what I'd do in such a situation. I'd like to think that I'd be dedicated enough to stick by the person I care about regardless of the circumstances, but ten years is a long time to deny yourself...

Jam it back in, in the dark.