>>78375456It's actually been implied in the comic strip before that he's aware of Peppermint Patty's crush on him, but he doesn't reciprocate. She's been incredibly cruel to him on a number of occasions despite her feelings, and doesn't have the capacity to really consider others before herself, so I can't blame him too much.
Ignoring Marcie's crush on him, on the other hand, feels less forgivable.