changing relationship

every child born in this world is bound to have its own feelings. but the transformation of love and affection it shows is amazing. to me it is intriguing. let the child may be a girl or a boy it is loved by its parents ........mostly. but as the time passes the child developes some intimacy either with father or mother. it sometimes lead to the envy of ther other parent. as time passes and the child grow it comes across friends with whom it shares it feelings a gap developes with the relationship the child has with its parent. then some child come across someone with whom love deveopes the gap still increases. then marriage and children for them and the cycle starts onceagain. i always think that the love between the child and the parent always remain the same. but the mind of the parent always think that they are loosing their hold on the children once it developes friendship and love. i couldnt enter into the mind of the younger generation but just want to know the answer