Sarah Dale, a 39-year-old nurse who specialized in dealing with cancer patients, has admitted to having relationships with two husbands of her patients, with allegations of a third.
Dale has now lost her job at Queen Elizabeth National Health Service Hospital in Kings Lynn, England. She has also been "debadged" by the Macmillan cancer support charity.
She is now living with Stephen Ellis, 50, whose partner died of cancer last year.
Dale told The Sun, "The hospital was told I'd had three relationships with men who had lost their partners to cancer. But I have had two.
"One of them was long-term and we were together for nearly ten years. And the other is the one I am in now, who I love."
NHS officials were tipped off by a series of anonymous letters, which led to Dale taking sick leave before being fired by the hospital in January.
Ms Dale is still allowed to work as a nurse, but may be barred from working by the Nursing and Midwifery Council if found guilty of bringing her profession into disrepute.
A source at the hospital said, "It is embarrassing but not representative at all of the integrity most nurses act with."