seems you are (conveniently) suffering from memory loss. the maps of Bangladesh and Pakistan exist because of the common struggles of Muslims of British India. East Bengal and NW British India were not separated until 1947, and even after that they functioned as one country. if you are uncomfortable with our history, please stop associating yourself with Bangladesh.
support between BD and PAK does not depend on your talking to friends from Pakistan. and they should also know that their support for BD should not depend on interaction with a wannabe Hindutva like you. in any case, BD and AFG matches are not high rivalry, and someone's support for one over the other doesn't mean a lot. my friends, who are Pakistani, were mostly indifferent in their support, as they had good reasons to support both teams. but that is irrelevant.
and it is very widely perceived notion that PAK simply let go of that 1999 WC match vs BD. Pakistan had a stellar team with enough capability to take the cup in that WC. i'm not saying Pakistan gave it as a gift, but there is little to make a fuss about when people say it was a gift, which was plausible. however it would be wrong if Indians say our 2007 WC win was also a gift.
i like the fact that there are Muslims in India. but i don't think a Hindu nationalist type like you dislikes Pakistan for that reason.
there might be. so what?