Thanks for choosing health care magic.
From the description you have stated it appears that you boy friend has bipolar mood disorder
and currently in a depressive phase. The Bipolar mood disorder occurs cause of chemical imbalance in the brain and can be prevented by keeping the patient on mood stabilizer
tablets. All said he need to be on medications for indefinite number of years. Currently you need to take him to a psychiatrist
who can start him on proper medications and psychotherapy
and bring him out of depression
and then you can think about your decisions.
Hope I have answered your query.
I will be more than happy to help you if you need any further clarifications.
In future if you want to discuss with me directly you can use the link:
Wish you a good health!