A high-profile, but not surprising, break-up

Bristol Palin, the daughter of Alaska Governor Sarah Palin, was a teenage mother. Now, she's a single mom.

The Associated Press and People magazine are reporting that Bristol Palin, 18, and Levi Johnston, 19, the father of the baby born in December, have broken up and called off plans to get married this summer.

Johnston told the AP Wednesday night that the couple decided "a while ago" to end their relationship. He also said some details of the breakup, rumors of which had been swirling on the Internet, were inaccurate. Bristol Palin said in a statement issued through a spokeswoman for her mother's political action committee that she was "devastated."

The couple was thrust into the public spotlight last September when Sarah Palin, the Republican vice presidential candidate, disclosed the week of the GOP national convention that Bristol was pregnant. She and John McCain's presidential campaign made the disclosure to stop what it called "out of control" Internet rumors that Palin's youngest child actually was conceived by her daughter and that the Alaska governor faked her pregnancy to cover that up.

After the family initially asked for privacy, the teen couple were in the audience when Palin accepted the nomination.