Is it illegal to marry your god brother?
Absolutely not. The children of one's various God children cannot even marry. Members of families who have any two joined in aldephopoesis are considered blood kin and cannot intermarry. Unless the two have some blood relationship in addition to being a godsister then it would not by an impediment to a marriage.
Is it bad to date your god brother?
But if you're just good family friends it's fine! There is no relation to a god sibling. Usually it's your parent's best friends kid. as long as you guys aren't actually related to each other, no.
Can you marry your godparent?
Can a person marry their god father? Godparents have no civil relationship with their godchildren. There would be no barrier to a civil marriage because of the godparent status. You can't transfer the structure of a godparent/godchild relationship to a marriage.
Can brother and sister get married in the US?
Various social media posts and online articles claim to show an American brother and sister who have been permitted to marry by the US Supreme Court. This is false. The court ruling has also been invented; across the United States, siblings are not allowed to marry.