"Easier than what, saying I'm alive?" Well, point being this isn't about Andy, who is not the dad. Andy's confused by that, because he thought it was already established that he was the dad in their made-up wonderful wonderful, and she's like, "Sure, you're the dad for now," but this is playtime anyway. He yells and she changes it to "Randy Newman, Diplomat/Cultural Attaché," but he goes back to whining.
About what? About his place in Nancy's life, where are they going, who is he to her, etc. The difference is that this time, it's allowing for the trap she's got him in, the assumption of no sex they've agreed to keep hypothetical forever, his sorta jealousy about Mark-Paul last week, and the fact that they've switched it up again: Now he's asking for commitment and she's the one telling him everything is temporary. Same argument, different vector, because instead of wanting to hear she'll never fuck him, now Andy wants to hear that he'll never be irrelevant.
Because sex or not, all men are disposable, and being the fake husband -- in every sense -- still guarantees him nothing. Maybe less. But mostly it's the Gosselaar thing: Once you get a look at that magic you could really start to question your fundamentals. She was willing to put down temporary roots for that, which means she opened the door to putting down roots at all, and Andy knows he needs in on the groundfloor of that possibly giant change. The possible sea change.
Nancy's always chosen security on a faulty foundation (dealing in Agrestic, killing her mother-in-law for the house in Ren-Mar, the gunmen in the baby store, Mexico under Pilar's watch) because it's the mix of crazy and safe -- the flux of both at once -- that started this show in the first place. She's declared she's sick of the RV and the deep outlaw shit, but she's also been pretty clear about permanently running from Esteban. And the idea of kink with Jack, in a shantytown that was only ever a pretend world for somebody else's dreams, was the perfect fantasy of stasis/isolation and mobility.
If Nancy's about to drag them all down into some new quasi-permanent situation, that's either very good for Andy or very bad for Andy. Because at the same time, Audra was his Mark-Paul Gosselaar, in that she made Andy think about home as a place you can actually be, which is why he's been trying to grow up even harder than Shane or Silas all season. Stasis is Nancy's preferred state, mobility is the spice that makes it workable. For Andy, it's the opposite: He's a man-child who loves running, and off-the-grid, but the fantasy of home, heimlich hygge coziness, is just as mesmerizing for him. She's Daredevil Girl, the skydiver, but he's Grownup Guy.