Secrets

Three friends go out at night, and after many rounds of drinks, one of them suggests that each one tell something I never told anyone.
- Okay - say the first - I never told anybody that I'm gay.
The second admits, 
- I'm having an affair with the very hot wife of my boss.
- Good - get the third - I do not know how to say this ...
- Oh, do not be embarrassed - encourage friends.
- Well ... I can not keep secrets.