I would have to say that I liked that you did pay attention to adding lots of details in regards to the physical aspects of both Luke and Christine the only emotion that could be detected between them would have been a sort of lust/physical one. I would have liked to have some more input in regards to Luke or Christine's emotions even during the poker game, since that game is essentially what was the turning point in the story.
I liked that the story read more casually, it made the story flow in an easy to read manner. I did also like the more or less open-ended because it's open for interpretation.
Christine was different. I liked that she wasn't some love struck girl. She seemed really level headed. The story was different, it wasn't all about falling in love, it was more casual and lusty. I liked that it was open ended as well, it leaves us to imagine what would happen. However, its really lacking in emotions, its hard to guess how they were feeling. Was he excited, was she excited, calm,angry. A lot of the basic emotions were missing and it was mostly physical description.
All together it was well written and there wasn't many grammatical errors if any. The pacing was well done as well. If there's any questions you have for what I said, feel free to message me. Thank you for your submission.