You were the current lover of Clover. You initially purchased her from Eulogy Jones. Clover didn't know your intentions. Nor did she care. As Eulogy said, she devoted herself to you completely. But something about you made her treat you... Better than Eulogy.

"There's nowhere I'd rather be, lover..." She says as you walk into your home in Megaton with her. She had a bit of blood on her cheek from an earlier fight.