1. Only two, Business and Personal.
2. Strictly business when nothing gets personal. Only business being discuss with no personal matter. Always have supply and demand to negotiate. If the deal sealed then business continues else we go separate ways until the next business deal.
3. Business gets personal when human factor is involved. When it becomes personal, profit and loss are no more significant. Judgement solely based on feelings and everything is mutual to conquer the goal. Time and money are never the issue in the relationship. If the relationship failed both business and personal will be history. Nothing personal!
4. The only way to get back to business is when both parties achieve personal relation stability.