You're leaving for fiancee, but you'll find your wife when you come back.

你现在离开你的未婚妻，可是当你回来时，你就可以见到你的妻子了。

youdao

And he began to write back, first to his fiancee who quickly became his wife, Mary, and he was really worried about all the slaves he owned.

随后他就开始写回信,首先给他的未婚妻玛丽,不久便结婚了,并且他对他所拥有的奴隶充满忧虑

耶鲁公开课 - 美国内战与重建课程节选