New love: The couple have been quietly dating over the last few weeks, according to friends Weeks earlier, he split with another BBC Wales staff member, Bethan Britton after a four-month relationship.
Traditionally a man with an eye for blondes, Mr Tennant made a departure from type when he dated Miss Fava for a few weeks in April.
The exotic brunette helped him celebrate his birthday and the pair were spotted on a string of romantic dates in Cardiff, including a concert where co-star John Barrowman was performing.
He was also linked to Kylie Minogue after the pop star appeared in the Christmas special, which featured a passionate kiss between the pair.
Who's Who of girlfriends: Tennant dated Dr Who's second assistant director Jennie Fava Last October, Tennant parted ways with actress Sophia Myles after a two-year relationship, following her move to Hollywood.
It has asymmetrically arranged compartments yet their proportions are harmonious.
Her schedule at Habitat was punishing yet exhilarating. 'I worked with designers such as Robin Day and Terence Woodgate.Tennant is almost 15 years her senior but her friends say that Moffett is more mature than her age, particularly as she is a single mother to six year old son Tyler.Jennie Fava Age: 27 Miss Fava is second assistant director on the latest series of Doctor Who, but also worked on shows such as Extras and The Chatterley Affari.David Tennant and Peter Davidson met for a Doctor Who special for Children in Need Georgie Moffett Age: 23 Miss Moffett is an up and coming actress, whose previous credits include, Where The Heart Is and The Bill.The blonde beauty is the daughter of former Doctor Who Peter Davison and American actress Sandra Dickson but is keen to make her own name on screen.Her work’s simplicity is deceptive: as she points out, it often incorporates an element of randomness that prevents it from looking bland.