The journey of a Mormon mother who went from supporting Proposition 8, California's gay marriage ban, to supporting her gay son is documented in a new film premiering Saturday at Frameline, San Francisco's LGBT film festival.

Families Are Forever chronicles the experience of Californians Wendy and Tom Montgomery, who say they didn't know one of their six children was gay when they were working for Proposition 8's passage in 2008.

Jordan, now 14, says in the film that he considered suicide.

“To be honest, before my son came out, I didn't know any other families who had gay kids,” Wendy told ABC News. “It's one of the things that's not talked about in my church, which makes it so much harder to deal with and know who to go to for help.”

She found help at the Family Acceptance Project at San Francisco State University.

“It gave me hope,” Wendy said of the group.

The Family Acceptance Project produced the documentary Families Are Forever.

“I am a better person for having a gay son. I love differently, and I love more openly. I didn't realize the judgment I had before I realized that having a gay son was a great blessing and not a burden.” (A trailer for the film is embedded on this page. Visit our video library for more videos.)