@Werducc
Calling someone with given name is very disrespectful, usually people who are really closed to each other like a best friend or given a situation where there is more than 1 same family name.
Very common for husband and wife not calling given name to each other, usually address them as honey, husband, wife,dad, mother etc
Even with sibling with onii, onee etc
Well at least that what I heard from my friend