When it comes to famous couples, we all have a tendency to assume that their relationships are perfect. But then we're hit with a sudden breakup announcement, and before we know it, celebrities are making shocking confessions about their exes and their seemingly perfect love lives.

Well, talk about a major bummer.

We've seen so many of our favorite couples split up in the past, and a lot of them left us wondering why — they always looked so happy together! Yet, stars like Vanessa Hudgens were quick to remind us that things are not always what they seem.

"I went through a phase when I was really mean because I was so fed up. Girls were running after him, and I was giving them death stares. Then I realized that’s not what that’s about,” she said about her relationship with former co-star Zac Efron.

We would've never guessed that the former Disney Channel star was going through that at the time, and we're still pretty sad that the two decided to break up. However, it's proof that even the most beloved celebrity pairs have their private struggles.

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Click through the gallery to see which of your favorite stars made surprising confessions about former relationships.