Keep thinking of the Paige/Elizabeth scene, and remembering all those moments of them bonding in the trap house and at home, and the look on Liz's face, as she sees her outside. The sheer discipline to not try some Indiana Jones stunt, I was thinking that as Phil walked up the aisle, just to sit with his wife in the wake of a unthinkable turn of events. I think Phil was more resigned to it, Liz still saw Paige as her protege, and Paige had become her own woman.
Stan, I mean, we haven't even covered how wracked with guilt he will be, as the investigations ties Liz and Phil to numerous killings, and they all but stop, when they leave the city. Not to mention he has to deal with, one way or another, that the woman he loves may not love him that way, or for those reasons, and how he will handle it. Like all the reviews have stated, it's a poison to the marriage, even if it's false.
Stan essentially knows he betrayed his higher oath or higher loyalty (Comey!) for what he thought were higher principals of family, and friendship, and not to mention his own humiliation.