Crystal Harris says she married Hugh Hefner for security

Crystal Harris married

Hugh Hefner for "security".



The 26-year-old model tied the knot

with the 86-year-old Playboy

founder last New Year's Eve and she

admits her constant worries that she

would be "replaced" by another

girlfriend led to them agreeing to

wed.



Asked why they had married, she

told Huffington Post Live: "Well for

me it meant more security, knowing

that I am the one for him."



Passion for psychology



"Like we were talking about, there

are always girls in and out and

always the feeling of maybe being

replaced (...) And he made sure I

didn't feel that way anymore and

that was what the wedding was all

about."



Crystal - who originally called off her

wedding to the media mogul in June

2011, just five days before they were

due to wed - says she fell for her

new husband because he is so

"intriguing" and they share a passion

for psychology.



"When I first met him, I had never

even met a celebrity in my life

before. I was like, 'Oh my gosh Hef,'

and then we started talking," she

said.



'Big ordeal'



"And we both studied psychology in

school. He's very intriguing, I'll ask

him a million questions. I'll ask him

everything and we'll watch all of his

documentaries and he loves

revisiting all of that stuff.



"And I love learning about all the

history... Just being more involved in

his life and learning about Playboy

and all the things he has done to

change the world."



Crystal says the build up to their

first wedding was a "big ordeal".



"Last time it turned into a big ordeal

and then it all fell apart," she said.