In addition to retweeting, you can ‘Favorite’ tweets that you like. Favorited tweets have a star icon next to them. If you do not want other users to see your Favorites, you can protect your Tweets. When you protect your account, only your approved followers can see your Tweets and Favorites. If you do not want any users, including your followers, to see you Favorites, you can delete them from your account. Writer Bio

How to Hide Favorites on Twitter  7 Steps  - 1