Display your own Jupiterian qualities.
Jupiter-ruled Sag women tend to be generous and possess quick wits along with a love of both learning and travel. A world traveler PhD with a great sense of humor who gives unstintingly to charity would probably be her ideal mate. If that doesn't describe you, emphasize your intelligence, your ability to laugh, your volunteer work and your appreciation of foreign cultures.
Don't expect a nurse or a domestic goddess.
Most Sag women prefer active pursuits outside the house to staying at home and creating the perfect nest. Although a Sag woman makes a lively companion for a weekend of camping, a night on the town or touring the world by motorcycle, she is not the girlfriend who holds your hand through an emotional crisis.
Avoid jealousy and possessiveness.
A Sagittarius woman who is truly in love can remain faithful, but she will always enjoy flirting. Accept that this is part of her nature. She will respect a mate who is secure enough to enjoy her popularity.
Practice scrupulous honesty with her.
A Sag woman who believes her partner has lied to her or taken advantage of her generosity will react with anger. Often, she will imperiously cut the relationship off without further discussion.
Never talk down to her.
While they love it if someone can teach them something new, they expect this information to be conveyed in a respectful manner.