i'm on season three and...

i'm on season three of bmw, it's the first time i'm watching the show and i'm confused. during the second season they didn't show any sign that cory liked topanga and suddenly on the first episode of the third season he's dying to ask her out? i mean, obviously during the last days of their school year something must've happened that made him develop some feelings towards topanga and that he was thinking of over the summer but it makes no sense to end the second season like they did just to make them date on the first episode of season three... did i miss something on season two?