Here's a little tutorial on how to open your Valentines day cards, first is you choose a player of you choice, then you proceed as if you were going to send them a Valentines day card, next once you get the the screen that shows you the different cards you can choose from in the bottom right corner it says view cards.
*Just in case you don't know how to send them a card, all you have to do is choose a player of your choice, then click more actions once you have tapped them and at the bottom it says (Valentines Day Card)
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