Uh oh! Jaden Smith and Kylie Jenner can't deny they're just "best friends" anymore — they were totally caught in the act while they were on a movie date last night!

While they were inside the movie theater, some photographers snapped some pics of them holding hands through the window. When they realized they were busted, they hurried and let go of each other and continued walking!

We're not sure why they've been so secretive about their relationship — maybe it's because they don't want Will Smith and Kris Jenner to find out and ask them a bunch of questions!

Do you think Kylie and Jaden make a cute couple? Let us know in the comments!

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