How did Homer Simpson meet Marge Bouvier?

Homer's proposal to Marge is related in the episode 'I Married Marge'.

When Homer and Marge are parked at Inspiration point, Marge reads the index card on which Homer has written what he intends to say to her to propose marriage: "Marge, from the first moment I saw you, I never wanted to be with anybody else. I don't have much to offer you except all my love. Will you marry me?"