Why my boyfriend & my Sister call me childish?

My boyfriend, and my younger sister told me i told me i am childish..But i think i am not? and 1 of my friend even told me i am not childish.. The reason they call me childish is that i cried for small problem's and i always tell my parents everything about my relationship with my boyfriend that how i feel? And mum get's angry of my boyfriend and scolded him cause i cried in front of my Mum. Why is that so they call me childish??