Someone who would make yourself a better one and never let you down is the right person that you are going to marry with.这个对的人是指结婚对象还是什么的，定义的不是很清楚，这个回答是基于“对的人＝结婚对象”的假设来进行回答的，如原意与假设相悖，请追问。谢谢
