A woman is suing her ex-husband for infecting her with HIV after she claims he had unprotected s*x with multiple men and women behind her back.

The 36-year-old claims she became infected her husband had unprotected s*x outside their marriage.

She told The Sun of her shock at being diagnosed with the disease after suffering series of debilitating illnesses including pneumonia.

She said: “As soon as they told me I said ‘That b****** has given it me. I’d been faithful so there was no one else it could have been.”

She believes he didn’t know he had the disease until she was diagnosed, but has accused him of gross negligence over his actions, in what is believed to be a landmark legal action.

The couple had reportedly been together seven years, and wed in 2017, but the relationship broke down over her suspicions he had been cheating on her.