Two days later, here's another important Schroeder strip; the first one between the familiar combatants, him and Lucy, on the familiar battlefield, at the piano, and with the familiar tone, Lucy's infatuation. The main thing missing is Schroeder's annoyance.
Schroeder could get very angry at Lucy later on, but so far no character has really gotten very angry at another. The worse we've seen is Violet throwing Charlie Brown out of her house, and so far, more times than not, they forget why she was angry before the end of the strip and invites him back in.
It's the calm before the storm.