Original Commentary
One of the reasons Kimberly has changed a lot over the course of You Say it First was because I felt that Kimberly had been a bit curt in her relationship with Brisbane... and if she really was making a change, it would have to be a really big change in her personality over all.

Modern Commentary
The time to do that was before comic 13, when Brisbane showed up at her door.
In the original draft, she decided she would just quit her job, move out and start over. Then re-considered in the second panel. I'm pretty sure Isabel rewrote it to this, where it's a possibility instead of a declaration. I'm glad she did.
Kimberly, more than anything, feels comfortable around Brisbane. He's pleasant and easy to get along with. But man it would suck if she tried to move too fast and scared him off. Her track record for meeting guys isn't great. Her track record for meeting people in general isn't great. - Terrence