The singer, 24, denies reports that her relationship with husband Kevin Federline, 28, is on the rocks. "He helps me. He has to," she says in the interview, which took place at her Los Angeles home. "I'm (an) emotional wreck right now."
She adds that her marriage is "awesome" and says tabloid reports that Federline has been sleeping in the basement are untrue. Asked whether people are hoping her marriage will fail, she says, "If they are, that's sad. I think everybody should be 'pro love.' "
Asked whether she was upset by the ensuing headlines, she says, "I know I'm a good mom."
Last month Spears announced that she is expecting her second child with Federline.
The interview will air on NBC's Today (7 a.m. ET) and Dateline NBC (9 p.m. ET) on June 15.