Why are you so upset about whose apartment? If a person begins to behave in this way towards you, it is not an apartment, but a person. Thank God it arrived on time. If your conscience / ego / principles do not allow you to live in someone else's apartment - pay a flat fee, utilities, food, car, etc. There will be an article of expenses that will balance your mental troubles. If your partner starts to bother you. Whether it is an apartment, food or leisure - send it boldly and you will be happy.