Usagi was in a steady relationship with her past-life lover and future husband, Mamoru Chiba, whom she loved very deeply, even though they did bicker a lot before they started dating. The two later became the parents of Chibiusa in their future incarnations Neo-Queen Serenity and King Endymion.
At the beginning of the series Usagi had a rather large crush on Motoki Furuhata. It also appeared that she was attracted to Haruka before knowing her true gender, though this was more pronounced in the manga than the anime. Kou Seiya was attracted to Usagi and even managed to take her out on a date in the anime, but Usagi was always oblivious to Seiya's affections.