Selena Gomez spent pretty much all last week celebrating her big 21st birthday and had the biggest extravaganza of them all in Malibu, California last Saturday. But it ended being way more special than she expected with a surprise guest – Justin Bieber!

Chelsea Briggs explains in today’s Hollywire Hot Minute!

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All of SelGo’s pals gathered for a gypsy-themed bash, including her celeb BFF’s Julianne Hough and Nina Dobrev. But one very special person in her life flew back to LA for the night just to be by her side – her ex (?) Justin. Walking into the party with a rose in hand, the birthday girl was so happy to see him that she actually got emotional!

A source told HollywoodLife that Jelena was attached at the hip for the majority of the night and he even helped Selena when she wasn’t feeling too hot at the end of the party. “She was all over him. They were definitely touchy-feely and shared some kisses and back rubbing,” the source said. “H was being helpful by showing that he truly cared about Selena when she began to feel down. He got into the good graces of her friends, who initially weren’t thrilled that he showed up at the party.”

What do you think about Bieber surprising Selena? Is it a bit too much?