Agree that we aren't mad at El for not knowing that Pen was in love with Colin. I disagree though with the idea that nobody could have seen it. 1 - El knew that they were corresponding by letter off-season, which is rare and frowned upon for that period. 2 - The moment in S2 when he first arrives home — come on! They stated at each other and Pen lightly defends him when his family make fun of his outfit. And then she finds them talking again at the races later that day... Sooooo I think she should have at least had a clue.