I'm not sure if I would meet with the HSBF, but if you are comfortable with it I think it should be fine. It sounds like it has been a long time since you have talked. There may be enough distance since the original sitch with him to make the convo less emotional. Does H know you may see him?
I can totally relate to the lack of contact with H. It seems impossible to do any real DBing when there is so little contact. I wish I could give more advice in that area, but I know that initiating more contact has always backfired for me. He says he just isn't ready for a friendship or anything else. That ends up being more painful to hear than the silence. When you do see H (even if only for 5 minutes) you need to remember to act as if. Be happy and upbeat, like the encounter is just another thing to do in your happy life. Don't let him think that you are waiting to see him. I think the missed meeting with him may have been a good thing. It might have shown him that you are GAL. That isn't a bad thing. If he gave you no specific time, he was expecting you to sit around and wait for him. It is good that you showed him that you aren't doing that. I'll keep up with your sitch. I don't always have advice to give because I feel like I am failing miserably at this in my own sitch. I wish you luck.