Lauren Conrad was betrayed by many of her friends, US reports

"I want to say I can always trust my good friends that I've had forever, but at the same time, some of my oldest friends have betrayed me," the Hills star says.

Conrad opens up to Us about how ex Brody Jenner went public with a new girlfriend just days after she left for Paris.

"At this point, I have to question every person that wants to have a relationship with me, whether it's a friendship or a romantic relationship," she tells Us.

"When you have that type of thing, you always have to question, 'Why wasn't I good enough?'"

"It's disappointing to have to question relationships," she adds.