05/15/2014 at 04:00 PM EDT
may be disbanding
after their world tour ends Saturday, but that doesn't mean we've seen the last of member Siva Kaneswaran.
"I'm going to move [to Los Angeles] and do a little bit of acting and obviously carry on singing," Kaneswaran, 25, tells PEOPLE in a video interview.
But while the Irish-British singer may be going solo in his career, things are getting more serious for him and his life
duet partner – his fiancée, Nareesha McCaffrey
, who he proposed to last November.
"We're thinking of a Great Gatsby
-themed wedding with costumes and all that," he says. "I want a Star Wars
wedding but maybe my missus doesn't want that so we'll have to discuss it."