Yes, YouTube allows users to see what their friends are watching. This feature is called the "Watch Together" feature. To use this feature, users must be logged into their YouTube accounts and have added friends to their accounts. Once they have done this, they can click on the "Watch Together" icon in the top right corner of the YouTube homepage. This will open a new window where they can see a list of their friends who are currently watching videos on YouTube. They can then click on a friend's name to join their watch party.