mon seul véritable ami

my only true friend

→ mon
phrase Rare #45,651
my only true friend Used to describe a person as the speaker's one genuinely trusted or close friend. The possessive adjective changes with the speaker's gender only in other contexts; mon is used here because ami is masculine.
FR: Après toutes ces années, tu es toujours mon seul véritable ami.
EN: After all these years, you are still my only true friend.

Vous êtes mon seul véritable ami.

You are my only true friend.

Tom est mon seul véritable ami.

Tom is my only true friend.

Il est mon seul véritable ami.

He is my only true friend.

Tu es mon seul véritable ami.

You are my only true friend.