How to lose in the opening

In this post, I analyze two games against my frequent opponent AG.  In each case, one of us rapidly lost due to subtle but decisive opening blunders.

In game 1, we might say I botched the Sicilian:

In the next game, my opponent arguably botches the Scandanavian:

Again, given the gambit, I think the crucial mistake was a failure to castle kingside as quickly as possible.