This is one of those readings that just keeps unfolding and adding to the story the more cards you pull. (in 3rd person): Someone had a brief affair that they may have viewed as harmless and very temporary. The thing is that the recipient of their attention and affection had a completely different perspective of the experience They took it very seriously, so seriously that they may have made major life changes around it. 

And now what? 

This person has been sitting on their experience while mentally building up all kinds of resentment, jealousy, anger, and bitterness. They’ve had a bit of time to mull over the whole ordeal in their mind, and it looks like they may finally act on their emotions. Karma may come knocking.