None unless addressed by the court
nooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
If you are legally separated, you must already be married. Either way, the military doesn't recognise "seperations", you are either married or you aren't.
No. Custody must be granted by a court order unless the parents are married. If you are unmarried and want to give temporary custody of your children to your "fiance" it must be done through the court. You haven't mentioned whether the "fiance" is the father of the children.
not if you are the biological parent
There is no mention to who had legal custody of Treyvon Martin. However, it has been said that he lived with his father and his father's fiance for several years.
If she is over the age of 18, not legally. But it all depends on if your fiancé depends on her for everything (food, housing, etc.)
Application Procedures: Bringing a Fianc
* Unless your fiance sprung the fact he had a daughter on you at the last minute then you should be able to handle this. If he didn't tell you about having a daughter then he probably was fearful you wouldn't be able to handle this information. You did not state if the mother has custody; he has full custody or it's joint custody. If you love him it shouldn't make a difference. One day you will have children of your own.
Vivian
see your other question
Only if the non-custodial parent give up his parental rights.
No. If the fiance is the natural father, then he does have rights to his son. Getting married doesn't give him legal rights to your child (assuming he is not the father). He must adopt in order to have legal rights.