Source: Book of Exalted Deeds
By maintaining an intimate relationship with a good-aligned fey (such as a nymph or dryad), you gain some of the characteristics of fey.
Benefit: Fey creatures regard you as though you were fey. You gain a +2 circumstance bonus on all Charisma-related checks and a +l bonus on all saving throws against spells and spell-like abilities. Starting with the level when you take this feat, you gain 1 extra skill point per level.