I have known for a while I need to spilt from my partner. He betrayed me badly last summer and foolishly I took him back. We don't live together but I run/own a business that he plays a major part in (seasonal wedding industry) where both of us are important in client-facing roles. He's not a director but he's intrinsic to the business. I'm so utterly ground down o don't know what to do. Please help