What's that extra something?

That extra something that sets apart the one you're with from the others that you like and are physically attracted to?

YaoYun said that maybe, it's just the amount of time spent together. That's correct, if you're similarly attracted to two people, the bonds with the one you spend more time with would develop more strongly. But what if you've made a promise to be with one of them, and that promise was made to the one you're spending less time with?

I read this on Crystal's blog, she was talking about some book by Tony Parson, which is always about this guy who is "genuinely good" but keeps falling in love, and leaving the one he was in love with previously.

“Kazumi’s great,” Earmon said. “But the world is full of great women. That’s what romantic fools like you never admit. There are a million great women out there. Ten millions. You could be in love with any one of them. Given the right circumstances, given timing. Sooner or later you have to stop tormenting yourself with the thought that there’s just one out there with your name on. You have to be happy with what you’ve got. You have to love the one you’re with. You have to say – this is my home now, this is my wife and this is where I’m staying. Stop looking, Harry. Just stop looking, will you?"

And so for me, that extra something is Commitment. That choice to stick with someone, to stop looking. And right now, I'm not going to look, unless you tell me to start.