ive got a few female friends some that i dont see for years at a time, they come round, we cook, have a catchup and wine and have sex. then i see them in another year.

purely just friendship - no lust, or emotion (other than friends)
i think it just makes us better friends, i dont invite them to mine with the reasoning that i want to fuck them either, if it happens it happens if not it doesnt, i dont care.