Aphrodite

Aphrodite was the goddess of beauty and love and was the oldest, yet the most beautiful, of the Olympians. She was miraculously born when a certain fluid from Uranus's cut-off "thingie" was swallowed by Dione, a sea nymph. (Sometimes Greek mythology can have the crudest stuff in it.) Even though she was married to Hephaestus, she had two children by Ares - Eros (god of love, aka Cupid) and Harmonia (goddess of harmony). (War + Beautiful Women = Love and Harmony. Unsurprising.) She also had a mortal son, Aeneas (hero of Virgil's Aeneid) by Anchises, a human who was prematurely aged as a result. (The downside, I suppose, to "doing it" with a goddess who just happens to be a 10.)

Aphrodite didn't just "do it" with everyone possible - she made friends with them. Adonis, one of her mortal lovers was gored by a boar, and as he died, she turned his spilled blood into bright red anemone flowers as a parting gift. (She had tried to save him, but couldn't.) The lucky guy ended up splitting his time in the afterlife between Aphrodite and Persephone.