"I was wondering if anyone knew some good songs saying how much you miss someone or a song saying that you will wait till they are ready to get back together"

yes?
maybe not.. I thing those songs are like.. I miss you so much.. I love you and I will love you.. ill wait

isn´t it?

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Y morirme contigo si te matas, y matarme contigo si te mueres,
porque el amor cuando no muere mata, porque amores que matan nunca mueren