Okay.. So
I read this manga about 3 months ago.. Or less,
There's this beautiful emotionless player type of girl
Then this nerdy boy, the girl asks the boy out because
she thinks he's different and they start dating,
It won't last long because the girl will be moving soon.. What is it called?? .-.

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I forgot this manga title.. It goes like this

There was a girl studying for an exam at the park/library.. And then this guy pops up and annoys her but then he helps her, he promised to give her flowers once she finishes her test. But when she finishes he doesn't show up, then she finds out that the guy just died.