I am friends with him.

[tufguy]

"I am friends with him."

"He is friends with me."

"They are friends with them."

Please check.

Does "I am friends with him" mean "we are friends"?

 

[Boris Tatarenko]

You're right. "I'm friends with him" means that I'm his friend and he's mine.

I'm not a native speaker though. Perosnally I do not hear this phrase frequently.

 

[Tdol]

It is OK, though. In many contexts, we are friends would be more likely.