I know this feeling. I was super attached to my previous therapist. My last therapist had to violently fired me before I could move on. It was a horrible experience that took two more years to recover from.

Your therapist needs to do everything they can to help you get over this. The super attached feelings should have been taken care prior to it happening. This is their job, they know that we will get super attached because of our disorder. I know my new therapist is watching this at all costs. This is not a functional way to be in therapy with a therapist believe me when I tell you this is NOT good. I had this experience. What most do when they become OVERWHELMED and believe me they DO is to stick you in the hospital and then when you are discharged not take you back as a patient. So I know you are hoping to go into the hospital but understand that move may be the last meeting with your therapist you are super attached to. Be careful I can just tell you this from my experience. Once in the hospital their professional liability is taken over by the hospital and it is the easiest way to get rid of patients. When you get ready to get out (and maybe your experience will be different), they will refer you to someone else.

Good luck I will be thinking about you and your struggles.