Yr grand father and mother have PASSED away. Do u want to meet them in heaven (of course after yr death). just do all the good things in yr forthcoming life. U can definately meet yr grandparents in heaven. And if u dont act, u will see the hell. Well. Give a due thought to it. Thanks, take care.

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No human has definite proof that there's an afterlife nor the answer to that, we can only speculate so I think it's up to you. If you really believe in the afterlife then you should keep hoping to meet them, but again you can't know for sure until you die

First,I wanna say that I'm very sorry to hear that! Second,I don not think that will come true if you do so .I can understand how deep you love you grandparents ,but it does not mean you have to do as that .if you really believe that your grandparents' souls can exist ,then I think that they will be more happy if you can live better after they passed away. Third,I think the best way to solve this problem is to use your better spirit to live with them and try your best to work to make you relaxed more,and do not forget to send some flowers onto you gandparents' tomb on weekends. Fourth,为了你爱的和爱你的人，勇敢的活下去（For people who you love and who love you,living bravely)!

Your question is right.Our present is the sum total of our karmas of the past.If there is some account left between ur grand father, grandmother and ur self you will surely meet again in one form or the other.Regarding rebirth and after life we have circumstantial evidence that why one child is born in a remote corner of Africa wher he may die of hunger and another in a state where he will be looked after.Also why some kids at the age of 3 or 4 are masters either in music,science,litterature,computers etc.Also many kids when they grow up say that actually they wre so and so in their past birth. When we have no proof we have to believe the best answer.