What does the ex-boyfriend mean when he says that there is only a parting message when he breaks up?

Saying goodbye usually means greeting people when they leave.

1. Say hello when you leave. Shake hands and say goodbye.

2. Say goodbye. During the holiday, the students said goodbye to each other.

Second, farewell refers to parting; Break up (usually by saying hello or saying something). Contains the meaning of sadness (sadness)