GIRLS returns for its sixth and final season. Created by and starring Lena Dunham, the series is a comic look at the assorted humiliations and rare triumphs of a group of girls in their 20s.

Matthew Rhys had a memorable scene in the sixth season of Girls. Picture: Andy Kropa/Invision/AP

LIFE is filled with all kinds of tough decisions — just ask Matthew Rhys.

The actor’s partner and Americans co-star, Keri Russell, described how difficult it was for him to pick out a prosthetic penis to wear during his recent Girls guest appearance on Late Night with Seth Meyers.

“He got to choose his own [prosthetic penis],” the 40-year-old actress told Meyers.

“But he’s in such an awkward position, like ‘If I choose a giant one, people are gonna be like, ‘What a d**k’.”

Rhys, 42, decided the only way to deal with the problem was to pass the responsibility on to someone else.

“So he’s like, ‘I just like let someone else do it’,” the actress said.

In the episode, Rhys played Chuck Palmer, an acclaimed writer whose been accused of sexual misconduct and decides that the best way to seduce Lena Dunham’s character, Hannah, is to expose himself to her.

Foxtel chose to edit out the penis when the episode aired in Australia at the beginning of March.

Matthew Rhys on Girls. Picture: HBO

Matthew Rhys on Girls. Picture: HBOSource:Supplied

When Russell found out what kind of character her partner would be playing on the show, she asked him a very natural question — which member of the cast he would be sleeping with.

“He said he was gonna do that and I was like, ‘Who are you sleeping with?’ Like, ‘Who do you have sex with on the show?’ and he was like, ‘Well it’s not quite like that,’” she said with a laugh.

Speaking to Vulture last month, the actor said the chance to play such a unrepentant sleazebag was something that actually appealed to him.

“You’re thinking, ‘Is he going to redeem himself?’ And then you realise, no. That’s why I joined, because I’m interested in where the facts lie, and the animal aspect to these flawed human beings,” he told the website. “That’s what I liked about it.”

Russell and Rhys started dating in 2013 and celebrated the birth of their first child together last May. The actress is also mum to son River, 9, and Willa, 4, with ex-husband Shane Deary.

Keri Russell and Matthew Rhys attend the 74th Annual Golden Globe Awards.

Keri Russell and Matthew Rhys attend the 74th Annual Golden Globe Awards.Source:Getty Images

This article was originally published on The New York Post