Justin Bieber Says It's Hard to Trust People: They've 'Hurt My Heart'

"I'm a pretty sensitive guy, so I'll lay it all on the line."

Justin Bieber is showing a much more vulnerable side of himself these days.

In a candid new interview with radio host Elvis Duran that airs tomorrow on the nationally syndicated radio program, Elvis Duran and The Morning Show, the 21-year-old superstar opens up about being let down in the past, and how it's affected him.

"Trusting people is hard, especially for me. I've trusted people who I probably shouldn't have trusted before and they've hurt my heart," he says bluntly. "I'm a pretty sensitive guy, so I'll lay it all on the line, and they'll kind of pull it. So now I'm figuring out there's certain people I can't do that with."

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Still, he doesn't want to end up jaded.

"Here's what I'll tell the people: Don't let someone who ruined your trust ruin that next person's chance to gain that trust. I think I let that affect me and change the way I looked at people for a while," he admits. "There's so many beautiful and amazing people who will encourage you, who will love you, who will not judge you. ... I still have moments where I'm like, 'Yeah people suck.' And then I'll have those moments of like, 'No, people are awesome, and this is why I do what I do in the first place.'"

These days, the "Where Are U Now" singer is all about surrounding himself with the right people. "I just want to be around people who I feel are supporting me, uplifting me, and making sure I'm the best version of myself because there are so many people in this industry who just want to keep seeing me fall," he acknowledges.

ET talked to Duran, who said that the singer is using all of the naysayers as motivation.

"Justin did acknowledge that there are people out there that want to see him trip and fall and totally fail," Duran dished. "I get the feeling though he's using that as fuel to prove them wrong, and I really believe this new album, his new work is going to do that. I think it's going to make everyone forget about a lot of the bad stuff that was reported and just remember he's an artist, and he's a great singer."

As for turning around his previously less-than-stellar reputation, Bieber admits it took some time for him to get to the point where he wanted to make the change for himself.

"It has to be on you. You have to make the conscious effort, because for me, so many times it was good people coming in my life and tugging at me, but I wasn't ready," he reflects. "They're like, 'Justin, come on.' But I wasn't ready to take that leap and be like, 'Okay, this is what I want to change, this is who I am, and this is not who I am.'"

"I mean, maybe I'm a bad influence, but for me I was like, 'No, I'm going to do this until I feel like I shouldn't be doing this,’” he adds. “Maybe I was wrong, but that's how I learn, and I feel like I'm much better for it."

A large part of Justin's big public turnaround has been his new music. His Skrillex and Diplo collaboration, "Where Are U Now," has been well-received, and his highly anticipated new single, "What Do You Mean?" debuts Friday.

"Well, girls are often just flip-floppy," Bieber explained about the new tune to Ryan Seacrest last month. "They say something and they mean something else. So … what do you mean? I don't really know, that's why I'm asking."

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