Miley and Nick Jonas "Were In Love"

Miley Cyrus is shedding all of her secrets in the new issue of Seventeen Magazine.

The Hannah Montana star, 15, opens up about her two-year relationship with Jonas Brother, Nick Jonas, 15.

"We became boyfriend and girlfriend the day we met," Cyrus says in the September issue.  "He was on a quest to meet me, and he was like, 'I think you're beautiful and I really like you.'  And I was like 'Oh my gosh, I like you so much.'"

The teen stars never went public with their romance.  Cyrus told the press they were "just really good buds", though fans and reporters guessed otherwise.

"Nick and I loved each other," Miley says now.  "We still do, but we were in love with each other.  For two years he was basically my 24/7.  But it was really hard to keep it from people.  We were arguing a lot and it really wasn't fun."

The young couple broke up at the end of 2007, and Miley tells Seventeen she was broken hearted.  

"At first I bawled for a month straight.  I was so sad.  I just went into this weird funk.  And I dyed my hair black.  When we were dating, Nick wanted me to get highlights--and so I did that, and I got myself looking great.  And then, on the day we broke up, I was like, I want to make my hair black now--I don't want to look pretty; I want to look hard-core.  I was rebelling against everything Nick wanted me to be.  And then I was like, 'I've got to be myself for now, and just figure out who I really am." 

Miley says she doesn't rule out the possibility of getting back together with Nick, even though he is rumored to be dating fellow Disney star  Selena Gomez.

"Maybe he'll be my best friend for the rest of my life or maybe I'll end up marrying Nick Jonas!" Cyrus says.

But for now, she says she's happily single.

"Since the breakup, I've realized that I've met so many great guys, but I like being the girl nobody can have," she says. "No one can touch me, no one's mine. I'm myself. I think it's sexy to do your own thing."