Kristin Cavallari "lost trust in some people" amid her relationship with Nick Lachey.

The 37-year-old reality star struck up a media-intense relationship with 98 Degrees singer Nick, 51, in the late 2000s shortly after his split from Jessica Simpson and admitted that the whole thing became "wild" his ex-wife started to accuse her of stealing her style.

Speaking on her 'Let's Be Honest' podcast, she said: "This was a wild time in my life, because I was, overnight, on the cover of every tabloid.

"I had so many paparazzi following my every move, waiting outside of my house. He had just gotten a divorce from Jessica Simpson. So this was, like, the biggest thing in 2006. It was a wild ride.

"There are like four f****** poses you can do on a red carpet. Like, my hand on my hip? You think I'm stealing her poses? Like, what?

"This was when I really started to kind of lose trust in some people."

The former 'Laguna Beach' star only dated Nick - who is now married to Vanessa Lachey - for a brief period of time and eventually went on to have Camden, 12, Jaxon, 10, and Saylor, nine, with now-ex-husband Jay Cutler.

But the former 'Hills' star recalled a time when she felt a "sense of betrayal" from a friend who snapped a picture of her with Nick and sold it to a newspaper to make a considerable sum of money.

She said: "I was out one night with my friend, and Nick was there, and we were all sitting together. We were at a club. She acted like she was taking a photo of just me and her, right? Nick is in it next to me, but he's not looking at the camera because everyone thought it was a picture of me and [my friend], but Nick is actually in it a little bit.

"So [she] sold this picture for $2500 and it's not even a good picture. It's an awful photo, in fact it doesn't even look like we're together. It looks like they took two pictures of us and put them together.

"That was kind of the first real sense of betrayal I felt. Like wow, I'm not even safe with people I think are my friends. That was my introduction to shadiness."