That scene in Begin Again, where Mark Ruffalo and Keira Knightley trade playlists with an old school headphone splitter ... fully pairing them to your iPhone. The most reliable way to share ...
Although you can’t plug a headphone splitter into an iPhone anymore, you can use your AirPods Pro (or a second pair of AirPods) to share audio with a friend when paired with any iOS 13 device.