if the girl is nice , her parents arent the type of bangladeshi motherfkers who live eat and breed in india then spew hate about the country too
then i dont see anything wrong in it tbh
a friend of mine from delhi once told me that there are many bangladesh immigrants in the city who genuinely just need a home(flood survivors etc ) unlike the ones which mamta banerjee imported to increase her vote bank
plus if the two really love each other than they should do smthn about it , ya know get proper documents made (although i know the guy prolly is still in shock)