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The initial cell formed when a sperm has fertilized an ovum, which then travels down the fallopian tube for a few days, dividing into a larger cluster of cells to become a blastocyst
A framework for open/ethically nonomonogamous/poly relationships that involves one partner being a “primary,” centered above any other partners, the rest of whom are considered secondaries, tertiaries or comets.
Pressing one’s lips against someone else’s lips or some other body part to express affection and/or to seek out or provide sexual pleasure. May also include the tongue.