Short background: My expwbpd bf of 3 years broke up with me 2 months ago because he said he needed to focus on getting himself better and focusing on his career. That it wasn't fair to me. His father recently passed in a pretty sudden and traumatic way and this was also a factor that pushed him over the edge. 

I understood his deep pain and inability to cope, especially given the circumstances, but am still very much hurting. Throughout the relationship he would tell me how grateful he was for my stability and patience. Then it was over. 

But in being a stabilizing force until the end (even as he was breaking up with me), I never got to honestly express how much I loved him and was hurt by how I was pushed away after all we had been through. I want to speak my truth: both for closure and to perhaps give him perspective from my POV. 

My question is this: as a pwbpd, would receiving a letter expressing how much your ex loved, appreciated, and was consequently hurt by you be insightful, or simply painful? Have any of you had experiences receiving a letter? What did you take from it, if anything? How did it make you feel? Was it helpful in the long-run?