The actor recently proposed to indie singer FKA twigs, PEOPLE confirmed April 1, and it turns out his bride-to-be fancies starting a family.
"She really wants kids," a source close to Pattinson says of fellow Brit twigs (née Tahliah Barnett) in the new issue of PEOPLE.
The couple began dating in September, and their romance escalated quickly: Pattinson traveled with the artist on her European tour in the fall, the pair were spotted getting cozy during Miami's Art Basel fair in December, and a source told PEOPLE last month they were living together.
While the pair are eyeing late-summer nuptials (and a casual pub wedding if twigs has her way!), plans are "not definite," the source says.
For more on Robert Pattinson and FKA twigs's engagement, pick up the new issue of PEOPLE, on newsstands Friday