Relationships/What is love?

Why do relationships have to be so complicated sometimes? Like sometimes you have your good days and your all lovey-dovey then BAM! The problems start flying in.......you dont know what hit you. Adults say that im to young to know what love is but honestly neither do they........like who really knows what love is? Honestly.....You love your parents but do  you love your partner like you love your parents. there's so many different types of love so who can honestly say what love really is?