情報を伝える表現

let someone in on something　秘密を話す

-She may have let him in on the meeting.　彼女がばらしちゃったのかもしれない。

compare notes　意見を共有する

touch base (with someone)　ちょっと話す

-I just called him and touched base.

pick up on something　前の会話に出てきた話題を話す

beat around the bush　核心に触れるのを避けて違うことについて話す

-I won't beat around the bush.