some girls are high-maintenance lar. that one you cannot be too
nice to them or they will keep expecting high demands from you. If
you never grant their wish, they will kick up a fuss and start an
argument.
meanwhile, there are also down-to-earth girl who will appreciate
your sincerity and kindness. The more you are nicer to them, the
easier it is to enjoy a harmonious relationship.
So the root cause is not just the guys but the type of girls they
are dating also.