Re: Who was your FAVORITE Couple within the Series?
Yeah IMO Selina wearing the pearls in the end points to them being a couple by that time. The movie spent way too many times talking about the significance of those pearls for its appearance on Selina's neck in the end to not mean anything. Also, we don't know how much time has passed since that cafe scene so there might've been enough time for them to actually develop something since their time in Gotham.
I do agree though that it's still underdeveloped. It definitely has me wishing that we've seen more of them develop something throughout the movie.