I think it's important that you know the difference between OCD and OCPD. It seems like you do. I also have OCD and think that I may also have OCPD. I hide my OCPD and I'm discovering many things about myself through therapy. OCPD is very difficult to change. Is your girlfriend getting help? After reading your post I think that maybe my husband also has OCPD. My best recommendation is therapy. I am on medication for OCD but I think only therapy can help the OCPD.