An OnlyFans model murdered her partner with a single stab to the heart – a day after she left voice notes saying ‘I fully believe I am capable of killing him’.Mother-of-three Abigail White stabbed Bradley Lewis in the chest at her home in Kingswood in March this year.The knife penetrated the 22-year-old's heart and he later died in hospital.The incident happened on the same day Mr Lewis told White he no longer wanted to be together.