After the meeting of Yeomin and his father at late hours. Yeomin is going to return home and finding Taeseo waiting for him inside his house. That means that Taeseo actually used the key hidden under the plant pot.
After the meeting of Yeomin and his father at late hours. Yeomin is going to return home and finding Taeseo waiting for him inside his house. That means that Taeseo actually used the key hidden under the plant pot.