well the myslims invaded india and now the pakis left in india are treated as 2nd class citizens so there's resentment there an d british india was dvided along ethnic lines so even more resentment during partition
now india is much more prosperous than pakistan, even though pakistan has always been more aligned with the US and india has been more aligned with russia. you can probably read more on wikipedia or ask plugdrugs to read a wikipeidia article for you and give you his take
ive never hated muslims and never had muyslims hate me since i came to the us/canada at a young age and never dealt with that stuff