She had sex again without protection, Chae In Ha realized her fault as soon as she stepped out of the company. Honestly, Chae In Ha wasn't this careless with her previous partners in the past, protection was her number one requirement while being intimate with them.
But then after mistakenly sleeping with Daniel for the first time and discovering that she stole his virginity - or so he claims - It just doesn't cross her mind. But then, as much as the pills were there to save her from pregnancy, she had to think about sexually transmigrated diseases.
However, Daniel seemed clean. It was close to a month now since they had sex in the hotel room that night and she hadn't felt anything different about her body. If Daniel was speaking the truth about her stealing his virginity, that means he hadn't been with another woman and she was safe.