When you heard of a Chinese person mentions -my Ai Ren (Ai means love, and Ren means person) the meaning of the word -Ai Ren- is:

In Chinese, 'Ai Ren' (爱人) literally means 'beloved person' and is commonly used to refer to one's spouse - either wife or husband. 'Ai' means love and 'Ren' means person. While it can imply romantic love in dating contexts, its primary and most formal usage is for married partners. Options B and C refer to unmarried relationships, which is not the main meaning.