Actress Emma Watson is reportedly dating a 35-year-old American Ivy League graduate William Knight, who is more commonly known as Mack and describes himself as a "tech and business entrepreneur wizard".

According to a source, “Mack is just a normal, down-to-earth guy who has nothing to do with Hollywood, and Emma loves that.”

The 25-year-old Watson, previously dated rugby player Matthew Janney until their relationship ended in 2014.

The split was devastating for the actress, but she and Knight have been dating for the last four months, during which time he visited Watson in her home town of Oxford for New Year, reports femalefirst.co.uk.

"She was left really hurt by her break-up with Matthew and it's taken her more than a year to feel ready to start again with somebody. They're really happy with each other and see each other whenever Emma does not have work commitments,” The Sun's Sunday newspaper quoted a source as saying.