(idiom) to lose control of your emotions, to overreact
The poor schoolteacher got carried away and started crying when she won five million dollars in the lottery.
The workers complained to their boss because the manager was always getting carried away over unimportant things.
Boyfriend: We need to talk.
Boyfriend: Please don’t get carried away, but I think we should date other people.
Girlfriend: What?! I thought we were going to get married! I hate you!
Boyfriend: I asked you not to get carried away!