Hi lemath,
I agree with 1dayatatime, that you need a proper diagnosis before you can move on with this. It's possible that your boyfriend has suddenly developed a bipolar disorder and is in a manic phase. The doctors will be able to diagnose this and it is treatable.
Once you know for definite what the situation is, then it will be a little easier. It's only my own feeling, but I would be careful not to get drawn into your boyfriend's delusions, he is clearly unwell at the moment, and you need to keep some emotional distance from the illness. I hope you can get through this OK.
It sounds to me like you are a strong lady, and you love him.
Good thoughts to you, Myzen