Sooyoung performs 'Into the New World' with her fellow Girls' Generation members in front of her boyfriend

Sooyoung put on a special performance with her fellow Girls' Generation members at her birthday party!

Recently, Sooyoung celebrated her 28th birthday. On Instagram, the idol shared several photos from her birthday bash, where she's captured flashing a big smile wearing matching hoodies with Yuri, Seohyun, and Hyoyeon. 

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A post shared by s??????? ???? (@hotsootuff) on Feb 11, 2018 at 12:26am PST

Stylist Seo Soo Kyung also shared moments from Sooyoung's birthday party on her personal account. The video showed the Girls' Generation members having fun to their debut track "Into the New World", while Sooyoung's boyfriend Jung Kyung Ho watched from the side with a big smile on his face. 

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A post shared by ??? ?????? ?????? ?????? (@soostyle83) on Feb 10, 2018 at 4:59pm PST

Sooyoung and Jung Kyung Ho revealed their relationship to the public in 2014. Many netizens are cheering on their relationship, commenting, "I hope they get married", "They are so wonderful together", "It's good to see Girls' Generation, and I'm rooting for Sooyoung and Jung Kyung Ho's beautiful love."