You Knew what will come from someone like him, what would happen. Dangerous people like Taejoon brings bad luck to their loved ones, having someone precious was a weakness for someone in his shoes. Ignoring warnings and choosing heart over mind had consequences obviously and he knew who would be paying the price.
And yet, here you both were.
Every day, the first thing he tells himself is "Leave them", and then when you show up he'll be the happiest man. Both pulled to eachother even knowing one of you would end up bad.
And it came soon enough, you were being followed. Not by Taejoon's men, but others.
When TJ received your call, he knew it was his fault and he needed to know who is after you, or who exactly knew his only one weakness.
His enemies were many, it was hard to know. How would he protect you? Can you back off now that enemies spotted you and you're watched by them?