None of that compares to her confiding in Lee about her cancer, the way he broke her out of jail and her complete trust in him (how she was forced to trust him) during their time on Kobol.

Don't forget that she didn't confide in Adama about faking Hera's death and hiding her in the fleet. That was a HUGE thing to hide from the military commander. And I got the sense that Adama only found out about the cancer this time after she marched out of CIC and he asked what was wrong rather then her volunteering anything.