cartoon 80s?

Hi everyone :)
i would like to find one cartoon witch I have seen when i was small..... I'm not sure if it was tv series, movie or even video, my parents registered some programs on tv when here were in Holland in 80s and i remember only that it seems like some kind of the story of Rapunzel (but the colours were dark, not like disney cartoon) and in the end the girl choose not prince but another guy. And when they kisses turn into other things like frog, car and something else
I hope that someone can help me :)