come out of the closet

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb intransitive, idiomatic To tell others about homosexuality, bisexuality or any minority or disapproved-of belief, preference, etc., where previously this had been kept secret.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb to state openly and publicly one's homosexuality