Lizzie Purbrick, a former champion equestrian, admitted in a British court that she scrawled rude messages inside her lover's house in pig's blood as revenge for an affair.
She said she discovered her partner, conservative member of Parliament David Prior, was sleeping with another woman. So in May, she let herself into his South London home, armed with the blood.
Purbrick turned herself into police quickly, and confessed to the crime in court on Tuesday. She called the blood-spraying act "cathartic."
She has been sentenced to 120 hours of community service.