They're probably not the same Teammates Anna and Meg that you fight on Hoenn Route 117, since there are multiple instances of the Teammate trainer class that all look the same. Of course, that just means there's at least two Teammate couples in ORAS.
Didn't expect that boat scene at all. With those NPCs, combined with Zinnia, Lisia, and Courtney's interactions with the player, ORAS was pretty great. SuMo has Lillie, but other than that, not much.