The Jack Gilinsky - Gabbywbu

Regan Stirling used to have a 'thing' with the Jack Gilinsky, but they were never official. Since then, he's been a complete jerk and nowhere near to how he used to be when they loved each other. When she runs into him at a party, what will happen between the two of them? Will she be able to change his ways, or will she be hurt by them?