Breaking the Wine Glass: This act serves as an expression of sadness at the destruction of the Temple in Jerusalem, and identifies the couple with the spiritual and national destiny of the Jewish people.
Homosexual orientation is not a sin in Judaism, but homosexual acts are. Male-male sex is forbidden by the Torah. Lesbian sex is not prohibited by the Torah, but is generally considered prohibited as "licentiousness."
The World Congress of Gay, Lesbian, Bisexual, and Transgender Jews
Trembling Before G-d
Congregation Beth Simchat Torah