Thank you for the questions. They are good questions and worthy of a lengthy response, but I will keep it concise. I can only imagine a loving relationship between God and Adam. Consider scriptural illustrations of how the shepherd cares for the flock. Imagine how much more love there was from God to Adam. Consider now Genesis 3:10 after Adam disobeyed God and hides from Him. Adam said he was afraid of God after hearing his voice in the garden because he was naked. The first emotional state of shame and guilt as the first man sinned against God was a dreadful occasion in human history.
Eve’s curiosity, I think curiosity was just one small factor in play in the larger scheme of the serpent’s deception. The deception against Eve, I believe, was a high misinterpretation of God’s commandment. It is crucial for anyone who believes the word of God to study it and know it. It is the safest way to guard one’s mind against any deception. Christians do not live by bread alone, but by the bread of life; without bread, the body dies. Without the bread of life, the soul parishes.
The final question regarding Adam eating the fruit after his wife; it is clear from the scriptures that Eve was deceived, but Adam was not. 1 Timothy chapter 2:14 confirms Adam was not deceived; therefore, he deliberately disobeyed God. The love Adam had for his wife must have been immense. It is a reasonable common emotion for a man to lay his life down for his wife; this may have been the case for Adam. Interestingly, Ephesians 5:25 commands husbands to love their wives as much as Christ loved the church and gave his life for it. In allegory form, we see that Adam was a typology of Christ at that point in the garden as he was willing to lay his life down for or with his wife.