If you don't feel well, go and stay and show him your psychological feelings. If you insist on breaking up, you should calm yourself down and adjust your mentality.

I suggest that you can often do something that can make you feel relaxed and happy during this time, such as listening to music, watching movies, singing and doing sports. You can also chat with relatives or friends around you and adjust your emotional state by talking. Going out to participate in some group activities or making some new friends at ordinary times can help you get out of the shadow of lovelorn as soon as possible.