I think it's the slower reading time, because I haven't been this upset w/ Edward during the last few readings.

Edward was not obviously courting Elinor in the way Willoughby courted Marianne, but Elinor & her family considered him sincerely attached to her. It wasn't just a fancy, either, in the way someone like Mrs Jennings might assume any single man must be falling in love w/ a pretty, unattached young woman. And whether Edward intended for Elinor to fall in love with him or not, she did -- and she wouldn't have done so, she wouldn't have allowed her warm feelings to grow into love IF she had known he was already engaged.

Edward's only defense, imo, is that he is ignorant: he didn't know that Elinor loved him. But that doesn't excuse his behaviour at Norland, especially once he realized that he was falling in love with Elinor.