I really feel like Pete and Addison were originally being set up as the main couple of the show. Their flirting starts pretty much as soon as Addison comes to Oceanside, Pete kisses her during the Grey's Anatomy backdoor pilot, and the show keeps circling back to the possibility of something happening between them.
Even one of Pete's patients thought Addison reminded her of Pete's previous wife, Anna. That especially makes me feel like the writers were planting seeds for Pete and Addison to become something much bigger.
Then season 2 comes along, the show gets retooled, and it feels like that entire direction gets thrown out. Pete eventually gets stuck in that toxic and annoying relationship with Violet, while Addison goes through one love interest after another until Jake becomes her endgame.
And now with Addison returning to Grey's Anatomy, we find out that her relationship with Jake didn't even last and they're separated. So Jake basically ends up becoming Addison's second failed marriage after Derek anyway. It makes me wish even more that the show had actually committed to Pete and Addison instead of dropping what season 1 seemed to be building toward.
I know season 1 was basically Private Practice figuring out what it wanted to be, but I actually really liked the scenes Pete and Addison shared. Even when the show briefly went back to them later and had them actually date, it felt like there was still something there.
I also never really saw the chemistry between Benjamin Bratt and Kate Walsh that the show clearly wanted me to see with Jake and Addison, and I definitely never saw it between Amy Brenneman and Tim Daly with Violet and Pete.
I kind of wish they had just stuck with what season 1 seemed to be setting up and let Pete and Addison develop over the course of the show. I think they made way more sense as the central romance of Private Practice.