That's bad faith bullshit. They were together for a long time, didn't really break up on bad terms, still care for each other, he wanted to see how she was doing.
It'd have been weird and clingy if he'd have called her right when he gets to town, esp since he had a busy schedule, but it'd also have been weird and cold if he'd been there for over a week without ever letting her know. It was perfectly natural to see each other.
It's Eve who decided to immediately fuck him because that'll make them get back together, and then she threw a fit because it turned out that he didn't return to NY just for her and wasn't ridiculously hung up on her and hadn't called her first thing, even though she hasn't contacted him either, he was the one to reach out.
All Park did was be receptive to Eve's advances. All these "he just wanted to pork her" takes as if Eve didn't rush to the OB gyn as soon as there's agreed to see for drinks so she could fuck him, trying to make it seem like it was him doing the seducing, are ridiculous. Park said "do you want to meet for drinks" and Eve heard "do you want to fuck and get back together".