We tell all our models they don't have to do anything they don't want to do. Some do not want to model for this site, others are fine with it as long as they don't do oral, so we are always pleased when we find people that love having messy bloody period sex. Our guy was a bit hesitant at first when he went in for a taste, but he clearly liked it since he dug in and came back up having earned his red wings :)