Chelsy Davy and Prince Harry
Nigel Bennett /Express UK/ZUMA; INF
03/25/2009 at 10:00 AM EDT
That black-haired mystery man Prince Harry
's ex-girlfriend Chelsy Davy has been spending so much time with lately isn't the new love in her life. Quite the opposite, in fact: The mystery man is Prince Harry himself.
The couple, who split
in January, apparently have been sneaking weekends together in London.
The latest rendezvous saw Harry, 24, don a black wig to hide his ginger hair to party with law student Davy, 23, at the London nightclub The Lightbox on Friday, the U.K.'s Daily Mail
A source confirms to PEOPLE that the pair are definitely back on again. But it is unknown how much time they have to spend together, with Davy about to take final exams at Leeds University, and the prince rigorously training to fly with the Army Air Corps. Among the issues that led to their split
were their differing interests and his commitment to the
In reuniting with Davy, Harry is repeating the pattern of his brother, Prince William
, 26, who split with longtime girlfriend
Kate Middleton in 2007 only to get back together
with her after about two months.
Since the January break-up with Davy, Harry has been linked with other women who all turned out to be dating other people in his set or simply close friends of the royals.