Nam Joo-hyuk and Kim Tae-ri, the stars of "Twenty-Five Twenty-One," are officially dating! Here's what we know about their relationship. Read on for the details!

Start-Up, starring Bae Suzy and Nam Joo-hyuk, also featuring Kim Seon-ho in a pivotal role, was a breath of fresh air, especially for those stuck in their professional endeavors wanting to set free from the burden of a monotonous 9-5 and willing to undertake their own adventures.