Mitt Romney is a guest on this evening's "Piers Morgan Tonight" (along with Ann Coulter). He talks about his views on gay marriage. "The gay community changed their perspective as to what they wanted," Romney told Piers Morgan. "I opposed same sex marriage. At the same time I would advance the efforts not to discriminate against people who are gay."

But what about the way Romney's religion, Mormonism, looks at homosexuality?

"I separate quite distinctly matters of personal faith from the leadership one has in a political sense," he said. "You don't begin to apply the doctrines of a religion to responsibility for guiding a nation or guiding a state."

Check out more of Romney's interview tonight at 9pmET/PT, as well as Piers' sit-down with conservative commentator Ann Coulter.

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