Robert Pattinson is reportedly having "cold feet" on his wedding with FKA Twigs and the main reason is that the "Twilight" actor is allegedly missing his time with Kristen Stewart.

A source told In Touch Weekly, per Celebrity Dirty Laundry, "Rob says that he is still in love with Twigs, but he is not in love with the idea of marriage anymore. He is hoping for a very long engagement."

"Rob told pals that he misses the wild life he had with Kristen. Twigs is her polar opposite, which is part of the reason Rob loves her, but he can't help but miss all of the spur-of-the-moment things that he used to do with Kristen," it said.

Kristen Stewart and Robert Pattinson split briefly when she cheated on "Snow White and the Huntsman" director Rupert Sanders. They got back together soon afterwards, and the reunion was even more brief.

Kristen Stewart is said to be dating her former assistant, Alicia Cargile, a rumor she doesn't deny.

The actress talked to Nylon where she was asked about Alicia Cargile and she said, "Google me, I'm not hiding anything."

"I think in three or four years, there are going to be a whole lot more people who don't think it's necessary to figure out if you're gay or straight," Kristen Stewart continued.

"It's like, just do your thing." That's something that applies to folks speculating on all things sexuality as much as those just, you know, living it."

Robert Pattinson and FKA Twigs reportedly got engaged during a party at the sidelines of her performance at the Coachella Music Festival earlier this year. There are not wedding dates revealed by the extremely private couple.

But the couple, FKA Twigs especially, has been heaped with a lot of abuse from Robert Pattinson and Kristen Stewart fans who thought that she's not worthy to be engaged to the actor.

During a Sunday Times interview, FKA Twigs was asked about her wedding plans to Robert Pattinson, and she replied, "I'm not prepared to talk about my private life. I don't really understand the fascination."