I disagree, because the writers actually did have Clark open up to someone without much prompting: Chloe

Yes, that's true. I think when I said "the writers" what I actually meant was "according to the longterm mysthology of the show." Because Clark and Lana *always* turn to each other in times of crisis, even if they have just broken up. This is just their emotional pattern: they break up, something horrible tragedy happens to one of them, they get (sort of) drawn back together.

The *viewers* know that this pattern has changed forever now, but Lana doesn't, so I guess I am just not as offended as some other folks at her acting like she still has girlfriend privileges. (I agree that her actual grief counseling leaves a lot to be desired, though!)

I do have to say I'm very happy that Clark is turning to Chloe rather than Lana for someone to confide in.