Pretty much what Pfrog said. To be honest I was a little unsure how else anybody could answer the initial question. It's a case of attempt or it's not.

Thinking about it is not the same as doing it if that narrows down what you were trying to get at? If however you're asking about putting yourself at risk... which could go either way but you're not exactly deliberately trying to end things... just in a state of not caring... then I'm not sure how you'd quantify that. I have been in both situations, but with the latter I wasn't really thinking about it as such... it just didn't matter.