I guess a few practical things are to take the HIV and other STI tests when you can (I think its a 6 month wait for HIV) and go to a debt consolidation place to sort out your finances. It's a good idea to have someone who will restrict your access to credit cards when manic or to decrease your credit limit.
He is upset by what you have done, and as you point out, he is right to feel hurt. Unfortunately you can't make it so it is all better for him. He has to get to that point by himself (or with therapy).
While it is your actions when manic that sparked off this problem, don't heap guilt upon yourself. Firstly - you were not yourself when it happened and secondly, how he has responded has contributed to your problems also.
I would encourage both of you to go to therapy, either individually or couples therapy or both. You need to be able to have open and honest conversations to help you manage your illness and to sort out the problems that it has caused.
My thoughts and prayers are with you