I know its been over a year since this track of Charlie Puth came out but the lyrics of this song set me thinking on the use of the phrase
We don't ___ anymore
To me, the only word that sits perfectly in context is 'talk'. The speaker intends to tell that They don't talk with each other.
While words like 'smile' doesn't do the same trick. That would imply both would never smile at all, not just restricting its domain to themselves. This would've worked better: 'we don't smile at each other'.
Am I getting it wrong? Or is he just using the poetic license in these lines?