Throughout history, many--- I daresay, most --- gay people married. Oscar Wilde was married to Constance Lloyd, and they had two sons, Cyril (1885) and Vyvyan (1886). The Episocopal bishop in New Hampshire, the Rev. Gene Robinson, was married and likewise had two children with his wife. New Jersey governor Jim McGreeey married twice and had children with both of his wives, before he famously announced he was gay.
Has any gay person ever been discriminated against and forbidden by law to marry?
If it's ever happened, I'd be interested in hearing about it.