The unlikely couple have been dating for just under a year, however their busy workloads have apparently driven them apart.
According to American magazine Us Weekly, Marc, 45, and 22-year-old Chloe are on a trial break but haven't ruled out getting back together again.
A source said: "They are taking a break. It is because of busy schedules."
In January, Chloe and Marc put on a united front at the Grammy Awards in Los Angeles.
Earlier this month, we also revealed how Marc and Chloe keep their romance alive when they're apart from each other with texts, FaceTime and phone calls.
But perhaps this isn't enough?
Chloe's rep had no comment to make when contacted by Reveal. Marc's spokesperson is yet to respond. Neither Chloe or Marc have tweeted about the rumoured split.
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