The couple are believed to have called it quits after more than five years together.
Lincoln and Amy, both 25, haven't appeared in each other's Instagram posts since November last year. When New Idea caught up with the actor recently, the blonde model was nowhere to be seen.
Attending the premiere of the film Baby Driver with a friend, Lincoln dodged questions about Amy, who now appears to be based in Los Angeles.
'I've been really busy, which is great,' he said.
When New Idea spoke to Lincoln last year, he was coy on the pair's long-term plans.
'It depends on what happens in the next month or two,' he said. 'We're both just trying to focus on being a good daughter and a good son, and seeing our parents.'
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