my wife is english and I am french . when our first boy was born , i only spoke to him in french and my wife in english . he was late speaking so i started talking to him in english . it was a mistake .
our second boy has only french from me and english from my wife . he can understand french , but wont speak it . he gets a lot more english through family and friends .
but the older is picking some of the french too , so i am hoping that both ( and our baby girl ) , will be fluent in both soon .