Robert Pattinson and FKA Twigs are already picking out baby names. 

Hollywood Life reported the 28-year-old "Twilight" star and ladylove have babies on the brain. A source told the website that the couple are looking forward to having children one day. 

"Rob and Tahliah (FKA) talk about kids all the time," a source told the site. "They both agree that they want lots of kids and they want to travel extensively with them to teach them about the world and other cultures."

However, the source added that the couple isn't in a rush to start their family, saying, "They like to play name games, like what's the most interesting and meaningful name they can come up with for their future kids. They're not in a rush. They are still young and really into their careers, but love talking about the big family they will one day create together."

Last week, People Magazine reported that the Pattinson and FKA engaged promise rings. The actor reportedly gave his girlfriend a promise ring back in December and plans to officially propose to FKA once she has completed her tour this summer and he has wrapped up his projects. 

A source told E! News that FKA, whose real name is Tahliah Debrett Barnett, was ecstatic about the ring. Pattinson made the announcement to a few selected friends during an "I-want-to-marry-you-dinner."

"He wants to marry her," a friend of the couple told People. "[He's] much more calm and happy than before. They are inseparable when they are together. They live at his house."