During business, the business comes first
When you are doing business and/or are at work, the good of the business must come first. What I mean is that, even if you’re fighting with your boyfriend and want to lament to your friend, it’s not the time. If it interferes with, hinders, or harms your work, you must put it aside. These are business hours after all. You must both follow that rule, and not take it personally.