Is Prince Harry planning to propose to girlfriend Cressida Bonas?

Prince Harry is reportedly planning to pop the question to his girlfriend of 18-months, Cressida Bonas.

Royal insiders have revealed that Harry has been talking about getting engaged and joking that it could be "any day" now, the Daily Star reported.

A palace source said that people close to the couple predict an engagement by the end of 2013 and a spring wedding.

The insider said that Bonas is "the one" and the apache helicopter pilot is very close to her.

The source asserted that people have heard Harry talking about how special Bonas is and about getting engaged.

He takes everything light-heartedly, including his wedding, but everyone knows what his true feelings are, the royal source added.