No way, that is terrible. I can just imagine how upset and betrayed you must feel. I really don’t think you should be holding out to stay in such a bad place, have you started to look round? Can you stay with your boyfriend as a temporary arrangement? Im sure he is fully aware of the situation and how it makes you feel.
Are you on medication for your Bipolar? I think under any circumstances anyone would have lost it. I know I would have, how dare they break in! I think you should have made it a police matter.
Please keep taking your medication if you have some and if you don’t see a doctor and explain what is happening in your life!
You need some sort of stability. What about family? Do you have anyone other than your boyfriend that can support you?