500
"Within the bond of marriage, tell me, Brutus,
Is it excepted I should know no secrets
That appertain to you? Am I yourself
But, as it were, in sort or limitation,
To keep with you at meals, comfort your bed,
And talk to you sometimes? Dwell I but in the suburbs
Of your good pleasure? If it be no more,
Portia is Brutus' harlot, not his wife." -Portia
What is Portia's anger over Brutus's secrecy? She believes that marriage should be open, but he refuses to share with her, and if that is the case, then she is no more than a harlot.