im really confused as well, just a few weeks ago, i was reading when God punished calin and put a mark on him so that no one would kill him :-\ If it was only his wife who else would be left on earth to kill him?
confusing...
yes unfortunately it is a sin if that happens and u would have to confess it :-[ Also i hear that u shouldnt confess if u have ur period, im not sure if that is correct or not but thats wat i heard