Your Gf/boyfriend And Your Parents ?

Please guys the way some girls behaves now really baffles me why will a girl tell you that  " if your dad or your mum is kind of important than he/she you should go and don't come back" for me oo they are pretty important than my girl friend infact they are the first, my parents and my siblings while the so called girl is the second,   in nutshell who comes first between your family and your GF or your BF