Everything about the scripture suggests Eve had sex with Satan and if you read the passages in the original Hebrew it becomes very clear .

First and foremost we know God calls different people's trees by numerous passages throughout the bible .

Then we have Eve telling Satan she can not TOUCH the tree of good and evil , the Hebrew word for touch ,means to lie naked with a woman .

Then when Eve speaks with God after the act she blames Satan saying he beguiled her , the word beguiled in Hebrew means wholly seduced as in sex .

Then we have God speaking to Satan , God says ... I will put emnity between thee and the woman between thy SEED and the woman's SEED. the word seed is for offspring .

Then you have Cain killing Abel the emnity between Satans child and eves child by adam .

Then you have Cain having his own bloodline because he is not the child of Adam who's bloodline is separate in chapter 5 .