To get on well/badly with
S’entendre bien/mal
To argue with
Se disputer
To understand eachother
Se comprendre
To phone eachother
Se téléphoner
To talk to eachother
Se parler
To confide in eachother
Se confier
To squabble with
Se chamailler
To tease each other
Se taquiner
To tell eachother
Se raconter/se dire