Thank you for your kind words. After reading all of the answers on this forum, I now realize how much I've lost myself in this toxic relationship. My parents always stressed selflessness and fighting for the ones you love...but I'm finally realizing that what my heart wants isn't necessarily what I NEED.
I'm so sorry to hear about your ex and friend, but it's inspiring to me that you know your own boundaries. I'm trying to do the same -- I need to be more firm about MY mental health.
I really appreciate your insight.