Reese, 48, has been seen out on a string of dates with Haarman, 56, – whose ex-wife – businesswoman Mala Gaonkar, 54, is now in a relationship with musician David Byrne, 72.
Reese looked chic in a black dress and heels as she hopped into an SUV before a dinner date with Haarmann – who wore a white shirt and blue trousers.
The pair looked in great spirits as they chatted during the day – marking the second time they have been seen together this week.
They were also seen on Sunday arriving at a heliport together before heading to an apartment building.