My boss has been hinting me for sexual favours. All this while he was sending signals by being touchy-feely with me. But yesterday I was shocked when he called me in his cabin and made it clear that if I need a good appraisal I must spend a night with him. I am the only bread-earner in my family and cannot afford to lose the job. If I say no to him, he will definitely get angry and fire me from my job. What should I do?