There isn’t enough clear, consistent public info to confidently say which “Bree” or which exact scene/post you’re asking about, so any very specific explanation would be guesswork.

However, in most recent TV and forum contexts where a character or user named Bree says she is a “terrible person,” it usually comes from one of these story or character beats:

Common reasons a “Bree” says this

  • Guilt after bad choices
    Characters like Bree in desperate, messy drama shows often call themselves terrible after lying, cheating, or hurting someone they care about, especially when a secret finally comes out.
  • Realizing they hurt someone who trusted them
    In many plots, Bree-type characters feel awful when they see the emotional damage they caused to a partner, friend, or family member, and “I’m a terrible person” is their way of owning how far they crossed the line.
  • Conflict between image and reality
    A lot of Bree characters are written as very controlled, put‑together people, and when their behavior doesn’t match that image—being hypocritical, judgmental, or selfish—they crash emotionally and label themselves terrible.
  • Pattern of “messy” decisions
    Newer shows featuring a Bree describe her as making repeatedly bad, impulsive choices in relationships, then having moments of self‑awareness where she admits she’s the problem.

Why the answer may differ

  • There are multiple popular Bree characters and discussions right now (from TV dramas to forum debates), and different communities give different reasons for calling her terrible.
  • Without the exact show, episode, clip, or forum thread, it is not possible to pinpoint a single canon moment and quote and say “she said she was a terrible person because of X event ” with accuracy.

If you can tell which Bree you mean (for example: show name, episode, or a link to the specific discussion), a much more precise explanation of why she said she was “a terrible person” in that moment is possible. Information gathered from public forums or data available on the internet and portrayed here.