You don't seem to be able to think rationally about this issue. I regard Franklin as one of the greatest of the founders of our nation. But I'm not blind about his faults, which he himself admitted. Don't try to make a plaster saint of him. He was a great and good man with flaws. Most of us are more flawed then he was.
That he indulged in premarital and extramarital sex is not unique among the founders. Let it go.
When you go about insinuating that Franklin was something other than what he was, you're lying about him. You take one incident early in his life and build a construct that you apply to his entire life. And you do so in defiance of all the evidence from Franklin's writings and the esteem his contemporaries held him in. You are quick to believe evil of him, and completely resistant to all the evidence against your belief.
Franklin's advice to a young man to get married, and not have affairs, you construe into him giving advice to play the field and have sex with older women. It's a flat out lie. You'll believe those who twist his words out of any sense of reality, and ignore his words. It clearly outlines your agenda.
It's pretty revealing that you define thinking "rationally" as ignoring all the evidence from Franklin's writings in favor of believing evil of the man.