Dear Mel,
It's been about two months since I recognized that I have HPD. I felt the EXACT same way that you are describing; essentially it was D-Day when it dawned on me. The self-blame and self-hatred were seemingly unbearable. The very first time I ever posted on this board, I honestly wanted to kill myself because I was so angry with who I was as a person. I am so glad I didn't do anything drastic when things were bad. This is the worst part; the beginning.
It is true what Wisdom and Jmac have said that the first step is the hardest - and probably the most painful - step. It is excruciating. Allow yourself to feel this. This is important. It's great that you are seeking professional therapy right now. I've found it to be very important to be able to talk through my feelings about having this disorder and simply be HEARD. This board, in addition to your therapy, is a great place for that. Until you find a good therapist, there are many folks on here who are eager to read, genuinely try to understand you, and respond. I'm on here almost every day and I would be more than willing to be a source of support for you in listening and responding promptly. I know how difficult it is in the beginning.
I notice that I have already began feeling better after these two months of heavy reflection. Now that I have had some time of intense self-reflection and of learning about the causes of my disorder, I am starting to recognize that it is not my fault that I have HPD. And even though I have it, HPD does not define ME as a person. You are you; your boyfriend enjoys the person that you are!
My boyfriend and I are very serious (we live together and plan to marry) and I shared this information with him as soon as I discovered it. At first I hesitated, wondering if he would reject me. But since I know that it is going to take years and lots of effort to BECOME a healthy partner to someone else, I wanted to be upfront with him and let him know this. I have shared this info with my mom and two of my close friends. No one has rejected me or blamed me. I have been met instead with friendliness, love, and unconditional acceptance. It was okay that I cried when I told my boyfriend. This is in fact a realization worthy of tears. It's no little thing, but there IS hope!!!
Let yourself feel right now. Remember that this current pain won't last forever, but it IS an important part of the healing process. Knowing the truth involves a loss: the loss of the days of ignorant bliss. What do we do when we experience loss? We grieve. And then we heal. Keep reflecting. And keep posting on here whenever you need support. Like I said, there are many of us on here who are here for you during this rough time. Stay the course! We'll be in touch.