As much as they'd like to otherwise, when at work, they see you as an employee. Depending on their personality, they may continue to see you as an employee when

As much as they'd like to otherwise, when at work, they see you as an employee. Depending on their personality, they may continue to see you as an employee when you're not at work. So, what does a prospective employee do? You treat your employer like you'd treat any other employer. This is best for both of you. It is better that their feelings get hurt due to you, for example, negotiating a better employment agreement elsewhere than, you getting hurt because the company makes money but they take advantage of your friendship to not give you a raise or promotion. Do not let your friendship be the reason you do more work for them than you would for any other employer. This will ruin your friendship and your desire to work.