Right there, calling anything a mistake is in and of itself problematic. We are here having experiences in human form to learn from, all we can, first hand, not just from books and theories. Parents lament when their children do not learn from the experience of others, but is that really learning?
Life is all about dealing with temptation and the dialogue between our better angels and the parts of us that yearn to know what something is like from first hand experience. There are choices we could make that would turn our lives into tragedy so I am not advocating by any stretch caving into temptation willy nilly but I am suggesting that hanging out at the edge of it may be a very honest and empowering place to be for gaining more self knowledge.
When there is betrayal, who is the culprit, the fault bearer? What if you refuse to draw a conclusion and just allow, we are all here to figure ourselves out as best we can and learn (hopefully) from the experiences that impacted us the most.
We are animal. We are angel. We are instinctual. We are rational. We are evolving. We are shedding and releasing. We are having about as complicated a life as can be imagined and showing tremendous courage by be willing to be a player on this stage. Apples and temptations aside, I suggest we cut ourselves a lot of slack.