Jane Seymour is “happier” than she has been in a long time. The 73-year-old actress – who was initially married to Michael Attenborough from 1971 until 1973, then to Geoffrey Planer from 1977 until 1978, then to David Flynn from 1982 until 1991 and then to Jeams Keach from 1993 until 2015 – has been in a relationship with medic John Zambetti since October last year but admitted that she “doesn’t want to mess things up” by getting married again. She told this week’s edition of People magazine: “All I know is that right now, I am very happy. I’m happier than I remember being for as long as I can…