Dongwoo and Jinyoung have been friends for years.  It seems like ever since Jinyoung started helping his father with the coffee shop.  Once his father moved away to a different city, Jinyoung took the coffee shop into his hands.  Since then, Dongwoo spends most of his time at the coffee shop, and Jinyoung spends a bit of time thinking about Dongwoo. 

In other news, Jinyoung's serving a gentleman that seems to be bored, J-hope was just sitting there, waiting for Suga to come.