If written equally and if Phil chose Shirley, I would happily see the pair of them reunite (so long as it didn't regress Shirley as a character), however I think Phil will end up staying with Sharon. (again)
Phil and Shirley seem to be much more popular away from DS.
I hope not because they literally just made Sharon the Mitchell matriach when Peggy died She was been there for Phil and his family and where was shirley
Looks likely, Buster lusting after Kaffy, you got the Sharon and Grant shizz coming up and cannot see them not going there, they need to give her a excuse to stray, although Phil looks like his gonna crock it so will he even have the energy.