In short, nothing definitive ever happened on screen, and nothing was definitively discussed on screen, either. There was no resolution. TPTB used that chemistry when it was a convenient plot point and when it wasn't, they just jettisoned it.
So you didn't miss any big renunciation scene or anything.
And I agree with Number One
on both J/C and C/7. Bad ideas, IMO, although you will find lots and lots of people in this forum who disagree. Check out "The Great J/C Thread" for more: http://www.trekbbs.com/showthread.php?t=82463
As of the time I posted this link, there were 554 posts on all things J/C, so there's probably everything you've ever wanted to know.