Twitter's new functionality would allow you to share tweets with a select set of individuals  (via Input)..

Twitter initially teased the feature, which was dubbed "Trusted Friends" at the time, in July. Alessandro Paluzzi, a mobile developer, has been following Twitter's growth since then, and it's now beginning to take form.

Unlike Instagram's Close Friends [/b]feature which allows you to do the same thing — but in Twitter's case, you'll be restricting your tweets to your "Flock."

If you’re in someone’s [b]Flock and they send out a tweet, Paluzzi noticed a label that may appear beneath that tweet, reading:

“You can see this Tweet because the author has added you to their Flock.”

This should make it easy to distinguish between close friends versus everyone else you follow on Twitter. To send a tweet to your Flock, it looks like Twitter will display an audience option before you send it out, letting you choose between all of Twitter and your selected users.

https://livenews.ng/close-friends-feature-on-twitter-might-share-tweets-with-up-to-150-users/