Last week rumors swirled about Alicia Keys being secretly engaged to producer Swizz Beatz.

Sources told US Magazine that Swizzy surprised Keys with a 7-carat rock while they were in Hawaii celebrating the singer's birthday.

Now, the newest rumor is that the couple have purchased a penthouse apartment together to celebrate.

According to the NY Post, Keys and Swizzy purchased the New York penthouse from Lenny Kravitz for a reported $14.5 million.

A source close to Kravitz confirmed the sale of the huge duplex apartment in Manhattan, which was previously rented from Kravitz by Nicole Kidman and Denzel Washington.

It has been on the market for eight years. The building also boasts celebrity tenants Courtney Love and Liv Tyler.

The couple's rep told the paper, however, that the rumors are not true.

Keys and the producer have been linked together for well over a year. While neither has confirmed that there is a relationship, Swizzy's soon-to-be-ex, Mashonda, has stated publicly that Keys was one of the main reasons for the split between her and Swizz .

Stay tuned...