Is it normal to share drinks?
Depends.It depends
Yes, plenty of people share drinks with friends or partners, though others find it gross. It can pass along germs, so skip it when someone is sick or has a cold sore.
It’s pretty common to take a sip from someone else’s drink, especially with friends or a partner. But people vary: some see it as casual or affectionate, while others would rather keep their cups to themselves.
Sharing a cup can pass along germs through saliva, so it’s sensible to avoid it if either person is sick or has a cold sore. Otherwise, it’s mostly a personal comfort-and-hygiene preference.