From the entire Bishoujo Senshi Sailor moon Manga, here is almost every manga fact about Hino Rei/Sailor Mars

Personal Background Info
Hino Rei was born APRIL 17 and is an ARIES
Bloodtype: AB
Talent: Meditation
Hobby: Fortune Telling
Favorite Food: FUGU (delicious Japanese Fish)
Has never farted (exam special #3 in the The Woman section)
Student at the T*A Private Girls School which offers a complete education from beginning to end, does not accept high school applications from other students, is very very strict, will not allow girls to run around, or to eat a lot, or to talk normally.
Favorite Flowers: Casablancas
Rei is a virgin and does not want to fall in love - back when she was princess of Mars in the Silver Millennium, she pledged her chastity to Princess Selenity - to be a sworn protector of the princess. what Rei wanted was a kindred spirit, when she didn't get that in her one love, Kaidou, she found it in her fellow senshi, she tells them that because she has all of them, she does not feel the need to search for love, they will be her kindred spirits, the people with the same goal. So yes, she never has sex

Family
Father: Political - member of the real Japanese political party called 'Liberal Democratic Party' - has dinner with his daughter every year on her birthday at the RAIN TREE restaurant and has his assistant send her a WHITE dress and white flowers - casablancas.

Mother: A sick woman who had some illness that made her body thinner, frailer, weaker, so that she died.

Rei says how much her mother depended on her father, but that her father wasn't there for her mother, because of this, Rei did not wish to get close to people, did not wish to depend on them, because you couldn't have faith in people in her mind, just as her mother's faith in her father proved to be futile (in her eyes)

Grandfather: Runs the Hikawa Shrine on Sendai Hill - he is NOT a perverted old man in the manga but appears very sweet, very caring and very genuine. He is the first to notice, from when rei was a little girl, that she was a wondrous girl, destined for far greater things than to be a shrine priestess.

Love Life
Kaidou Ace - her father's top assistant was the one man Rei loved, kissed, and wished to marry. He, though, was engaged to marry another woman, and was, apparently, in love with that woman. But he did kiss Rei ;)

She NEVER liked or chased after Mamoru in the manga - this is something the animators made up in the anime.

The rumours of Rei being with Jedeite are just that - RUMOURS. Naoko Takeuchi onbly DREW a poster of the 4 generals with the inner senshi but NEVER wrote such a plot. It is never implied or stated in the manga. However, Rei was the only one who could KILL Jedeite.