Sentence:  He claimed innocence; he had done nothing wrong, and had done nothing to provoke anyone else. Pointing an accusatory finger toward the other man, he said that he and the woman were in an apartment, “just starting intercoursing, when that guy busted through the door.” As the reader may have surmised, the guy busting down the door was the husband of the female <WSD>intercourser</WSD>. 
Meaning of the word marked with <WSD> tags:  Someone who has sexual intercourse.