see how he threw that back on YOU without taking a single iota of responsibility?
unless you strapped him down and shoved a funnel down his throat and then poured the alcohol in, you cannot MAKE another person drink.
you also cannot make another person NOT drink.
let him own this. cancel the heart to heart talks (where i believe only your heart is involved). you do have enough information on his intentions. it just make take more time to truly sink in.