Frieda (Peanuts) chatting instead of paying attention to the game. Frieda has made Lucy jealous by leaning on Schroeder's piano. Schroeder seemed to dislike her as much as he disliked Lucy when she didn't know who Beethoven was (and after Frieda claimed that she was hanging around Schroeder because she was a music lover). In one strip and episode of "The Charlie Brown and Snoopy Show," Frieda commented to Lucy that Schroeder wasn't very friendly. When Frieda attempted to kiss Schroeder while he was playing his piano, she was surprised when she found she had kissed Snoopy instead, and she ran away
Schroeder (Peanuts) and Schroeder feels he must emulate every aspect of his idol's life, even if he reciprocates Lucy's feelings. In a story arc where she and the rest of her family have moved out of town (also seen in the TV special "Is This Goodbye, Charlie Brown?"), Schroeder becomes frustrated with his music and mutters disbelievingly that he misses her, realizing that, despite his animosity toward her, Lucy has unwittingly become Schroeder's muse and he cannot play without her (he parodies Henry Higgins by saying, "Don't tell me I've grown accustomed to "THAT" face!"). Sometimes he gets so annoyed with Lucy