The photos are from back in May of 2015, likely a few months after they began dating that year. The two met through MBC drama 'The Legendary Witch', gradually gaining interest in each other after the production came to an end. Do Sang Woo is currently carrying out his mandatory military service, having enlisted in April of 2016.
In the photos revealed, you can see that the couple enjoyed shopping together for a few groceries, then returned to their car. While storing their grocery bags inside the car, Kim Yoon Seo can be seen joking with Do Sang Woo playfully, possibly arguing over who gets to drive. In the end, Kim Yoon Seo trudges over to the passenger's seat with a smile.
Aren't these two cute?