I'm 19 years old and my finacee is 21, we have been together going on four years now, everything has been going fine up until we moved in with his grandparents, now he is acting like a little child and not like a 21 year old, I just don't know what to do. For the past couple of months I have regreating my choice on marrying him, but since I love him so much I stay with him. I just don't know what to do about the way he is acting, he don't take anything serious anymore, everything is a joke to him now, What can I do?