User blog comment:Inkblood/Arthur or Lancelot~Who does Gwen love more?/@comment-81.151.120.26-20130412125603/@comment-5674726-20130413110735

Whatever about Arthur being able to forgive, I find it absolutely baffling that she was ever accepted as Queen when she was known to have been caught with another man the night before she was due to marry Arthur. It's not like that could be kept a secret, since Agravaine had the good sense to bring it to the attention of the court, and the common people couldn't fail to notice that the wedding was off and that the woman they believed would be their Queen had been banished. At the time of the marriage, Morgana was the only person who knew that Guinevere didn't choose to cheat on Arthur; even Gaius and Merlin only knew that Lancelot was a Shade, they believed that Guinevere kissed him of her own free will.

That should have been the end of any hope of Arthur's marriage to Guinevere being accepted. Like Caesar's wife, the Queen would have to be above suspicion and, after being caught with Lancelot, that could never be the case with Guinevere, despite her return to Camelot during Morgana's second reign.

Even if Arthur insisted on marrying Guinevere, you'd expect that the kindest assessment of him would have been that he was a besotted fool to trust a woman who had already betrayed him, and that the only people cheering at her coronation would have been Merlin, Gaius and the Round Table knights, with everybody else at court disapproving.