Boyfriend : nm and adj. fam. (word coming from companion which means "who eats his bread with").
Man, boy with whom we maintain familiar, friendly relations: friend, mate. Classmate, work.
A class friend, a regimental friend. He's a good, old friend.
His best friend.
Go out with friends, with friends.
Hi buddies !
In buddy (s): like a simple, (simple) comrade (s).
Pejorative: the (little) friends: those who are given to take advantage of good opportunities, in business (friends and rascals).
To put it mildly: friend, lover. He's her boyfriend (her boyfriend).
They are very good friends. They are buddies (friends-friends) (with an idea of frankness and simplicity).
Being buddies like pigs: very good friends.