The former Neighbours star met his bride-to-be Jennifer Morrison on the set of the hospital drama two years ago.
Spencer surprised his co-star, who plays Dr Allison Cameron to his Dr Robert Chase, by proposing during their recent Christmas holiday to Paris.
Both characters are engaged in a diagnostic medical fellowship with the series title character, Dr Gregory House, played by Golden Globe nominee Hugh Laurie.
The couple, both aged 27, have yet to set a wedding date, but will have to work around their hit show's film schedule.
But, but, I thought she was in love with House? She's a whore!
