After appearing in a campaign for Giordano, Kim and Shin started dating in May 2015, per Cosmopolitan Philippines. Agents for the two released a statement in July 2015 confirming their relationship, which read (via Soompi), «[Kim Woo Bin and Shin Min Ah] started to show interest from February, when they were shooting ads together, and officially started to meet after May.»
By December of that year, Kim and Shin had busy schedules, which led many to think the couple had split, but Kim’s agent calmed the rumors and issued a statement, saying (via Soompi), «Kim Woo Bin has started filming for the new KBS drama Uncontrollably Fond. Shin Min Ah, too, is currently busy filming for the KBS drama Oh My Venus. Though the two have hectic schedules, the two continue to love each other regardless.»
After Kim was diagnosed with cancer in May 2017, Shin was spotted on multiple occasions at the hospital, presumably accompanying him to his treatments. Outside of short statements in interviews, the pair keep their relationship under wraps.
In 2022, the couple both starred in «Our Blues» as romantic interests to other actors, which gave fans of the couple a kick. The pair remain a couple as of May 2023.