There is nothing in Genesis 3:15 or the surrounding context to indicate the sin of the garden involved sexual relations between Eve and the serpent.

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Island Center Forest Map (PDF) (cdn.kingcounty.gov) Island Center Forest features various forest stands, meadows, and the Mukai Pond and Meadowlake Pond wetlands, and it is home to the headwaters of Judd Creek. Island Center Forest provides habitat for a variety of wildlife, including more than 70 bird species. There are more than nine miles of trails for hikers, equestrians and mountain bikers. The wetlands are popular for bird watching and wildlife photography.

Did Eve Have Sex with Satan? The Serpent Seed View of Genesis 3:15 (equip.org) Branham (1909–65), a proponent of Oneness theology, taught the so-called serpent seed interpretation of Genesis 3, with adherents of this view often citing Genesis 3:15 in support of their position: “And I will put enmity between you [the serpent] and the woman, and between your offspring and hers; he will crush your head, and you will strike his heel” (ESV).