Monica Mares, 36, and her son Caleb Peterson, 19, face up to 18 months in prison if found guilty of incest at a trial later this year in New Mexico.
But the mother and son couple have vowed to fight for their right to have a sexual relationship and are appealing to the public to donate to their legal fund.
In an exclusive individual interviews with Daily Mail Online, they told how they are willing to risk everything to be together - and have decided to go public with their affair in a bid to raise awareness of Genetic Sexual Attraction (GSA) relationships.
GSA is defined as sexual attraction between close relatives, such as siblings or half-siblings, a parent and offspring, or first and second cousins, who first meet as adults.
Mares said: 'He is the love of my life and I don't want to lose him.My kids love him, my whole family does. Nothing can come between us not courts, or jail, nothing.
'I have to be with him. When I get out of prison I will move out of Clovis to a state that allows us to be together.'
Incest is a crime in all 50 states, but the specifics of the laws and punishment vary greatly from state to state.
Mother-of-nine Mares said she would even give up the right to see her other children if she was asked to choose between them and her lover.