He's one of the most successful and multi award-winning stars of British TV, having co-written the likes of The Office and Extras.

But Stephen Merchant, 42, was more than happy to take a backseat on Tuesday night as he joined his beautiful girlfriend Mircea Monroe for a party held in honour of her TV show Episodes.

The beloved British star looked proud as punch while cosying up to stunning Mircea, 35, at a bash to mark the fifth and final season of the Matt LeBlanc-fronted comedy series.

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Date night! The Office and Extras co-writer Stephen Merchant, 42, cuddled up to Episodes actress Mircea Monroe, 35, at a party to mark the show's fifth and final season on Tuesday night

Smitten: the couple looked blissfully happy as they posed together on the red carpet in Los Angeles

Cuddling up at the glamorous Los Angeles event, the couple looked blissfully happy as they beamed for the cameras, having earlier walked the red carpet together.

Mircea, who plays Morning Randolph in Episodes, turned heads in a curve-skimming black dress with plunging neckline, that highlighted her gym-honed figure.

She teamed her LBD with leg-lengthening black ankle strap heels, showing off her toned pins, and kept her jewellery minimal to allow her show-stopping frock to take centre stage.

Star of the show: former Friends legend Matt LeBlanc fronts the comedy series Episodes, playing a warped version of himself

Gorgeous! Blonde beauty Mircea looked sensational in a curve-skimming black frock and black peep-toe ankle strap heels

End of an era: Episodes will come to an end with its fifth series. Pictured are stars Stephen Mangan, Tamsin Greig, Mircea and Matt

The couple that laughs together, stays together! Stephen had his girlfriend in fits of laughter inside the venue, after she posed up a storm for the cameras outside

Mircea arranged her golden blonde locks into retro old Hollywood curls with a side-parting, and chose to make a smokey eye the focus of her make-up look.

A dash of blush and dusky pink lips finished her red carpet style.

The petite actress was towered over by her 6ft 7in beau Stephen on the red carpet, before they were snapped sharing an intimate moment inside the party.

Mircea was snapped with her arms around Stephen's waist in the throes of laughter, while he gazed at her adoringly.

Co-stars: Matt stars as a fictionalised version of himself, while Mircea plays Hollywood actress Morning Randolph

Saying goodbye: Mircea and Matt posed with co-stars Andrea Rosen and Kathleen Rose Perkins at the party marking Episodes' last series

Photobomb! 6ft 7inch Stephen towered above girlfriend Mircea, her Episodes co-star star Kathleen Rose Perkins, actor Christopher Moynihan and exec producer Jeffrey Klarik

Friends in high places! Matt joined David Nevins, the president and CEO of Showtime Networks on the red carpet

Brits take LA! Episodes follows a husband and wife writing team - Stephen Mangan and Tamsin Greig - who take heir hit British show to LA only to be forced into hiring Matt as the star

As well as snuggling up to her man, Mircea joined her co-stars Matt, Kathleen Rose Perkins and Andrea Rose for some photos, as they marked the last-ever season of their critically-acclaimed sitcom.

Episodes, which began in 2011, is about a husband and wife writing duo - Stephen Mangan and Tamsin Greig - who travel to the US to remake their successful British sitcom, but end up being forced to hire Matt LeBlanc as the star against their wishes.

Matt, best known as Friends' Joey Tribbiani, plays a fictionalised and over the top version of himself in the comedy.

Smile! The cast and crew lined up for a photo together at the West Hollywood party

Matt and his leading ladies! The actor looked thrilled as Kathleen Rose Perkins wrapped her arms around him while Andrea Rosen and Mircea looked on

Posing with the boss: Showtime president and CEO David Nevins joined the cast for a group photo. Episodes was a huge success for the network, garnering critical acclaim and a slew of prestigious awards nominations

The series garnered rave reviews and a string of prestigious nominations at the likes of the Golden Globes, BAFTAs and Emmy Awards.

Matt won the Golden Globe for Best Actor in a TV Series Musical or Comedy in 2012.

But all good things must come to an end and it was announced in 2016 that the fifth series of Extras would also be the last.

Award-winning show: A beaming Matt looked smart in a grey suit and open-necked white shirt. He won the Golden Globe for Best Actor in a TV Series Musical or Comedy in 2012

Episodes co-creators Jeffrey Klarik and David Crane said: 'We have had the best time making this show.

'Showtime has been the opposite of every network we write about. If it were up to them we could go on making Episodes forever. But we’ve told the story we set out to tell and we'd never want to outstay our welcome.'