Regarding Kohanim; what are the standards that a girl needs to meet in order for her to be fit for a Kohen? We have a friend who is not Frum at this time and has had a hard time finding a Shidduch as a Kohen. There is a girl who was “married” to a non-Jew at some point, but is no longer in that relationship. Is she suitable for a Kohen?
It is a Biblical prohibition for a Kohen to marry a woman who lived previously with a Goi, she is called a “Zonah” in the Torah.
If the boy is from a several generation non-Frum lineage, it might be worth looking into if indeed he is a kosher Kohen or just a Yisrael.
See Shulchan Aruch Even Haezer 6:1.