1. sad, but just never see him again.
2. screaming and crying so no one can live peacefully
3. call brothers/pals/hitman to beat him up
4. beat her up
5. pretend don't know
6. hire a private eye and a lawyer
7. storm to his office or parents' home to scream at him
8. do something so he can change his mind
9. throw his things on the streets and get a lawyer
10. confront him and suggest a marriage councile
11. confront him and let him choose between the other woman and me