Pierro was not a fool.

He knew the rumours circulating the mill, the whispers carrying along the Fatui's clandestine halls. He traps his lover at home, giving no chance to leave. They knew of his lover, but they couldn't begin to imagine the sheer depth of his love for you. Pierro was your lover, not your captor.

And the truth was much more innocent than that: You were sickly, born with a chronic illness that could take away your life should you overexert yourself.