I tried everything to marry muffy. But I am stuck with the heart events. I can't remember what heart events I have been through. I looked at the blue bar and I have seen that there is moomoomilk for sale which means the blue heart event is done. Which means the silver one too and the purple one. But strangely muffys heart is still silver!! Why? And if I try to do the silver black heart event it doesn't work!!!!!! Help!!!!!!!!