Blank, Gap, and Affair timeline?

Just an uber quick question on the timeline of events the three main overlapping stories take place in—

We know Gap goes first, because by the time the events in Blank take place, Sam and Mon are already married and living together so to speak. But does Blank take place after Affair?

I’ve just finished Affair, and the bit where Wan asks for a little help with making Pleng jealous was hilarious, especially because Khun Neung was so willing to help out. But is she already with Aneung by then? I’m so curious about the comment she makes, too, about being ‘good at homewrecking,’ and it being, ‘fun’ LMAOOOO something tells me you’ve got a lot of explaining to do, Khun Neung!