Pop culture faux pas

Because I've apparently had enough red wine to suppress my critical thinking faculties to all but the most obvious, that I was able to spot this is particularly sad. From "TV's Biggest Unrequited Crushes":

Ralph and Lisa, "The Simpsons": Poor Ralph Wiggum. One friendly Valentine from Lisa Simpson and he was hooked. He started following her home, mooning after her right up until she rejected him on TV, making it possible for Bart to later "pinpoint the second where his heart rips in half." Ralph, having cranked up the pain of his own crush by choo-choo-choosing a girl too nice to reject him except in a violent, pent-up rage, learned the hard way that nosebleeds and cat food do not attract the ladies. "The Simpsons" is a stealthily sentimental show in many ways, and its sympathy for a hopeless dweeb like Ralph is an example of its surprisingly soft heart.

Ralph was a one time valentine who then promptly returned to eating paste. The true unrequited love is Milhouse and Lisa. Am I wrong?