Boyfriend is goingcrazy

I've been with this guy for 7+ years. I've Bern faithful. Never once cheated. Now just about every day he accuses made PhD cheating,sneaking guys in the house,he hears people talking and thinks it's me, There is no one there. He trips when I lookout the window,door whatever. Eventhe tv sometimes. It's really bad. He Calls me names. It's really to the point that it's sickening. I've told him to leave,but he hasntt yet, he's threatening suicide. I love him,acne skirt of need him,financially. I just don't know what to do.? Please any advice would be helpful. I tell him he needs help,but he only gets mad,and worse. 

I can only echo susiedqqq's comments. So sorry to hear of your problem and I hope it works out Ok for you both.