Luke's quiet demeanor could be attributed to Sean's incessant chatter and his own anxiety over potentially missing out on a significant opportunity with Shelby, especially with Sean's presence looming. The prospect of losing Shelby to Sean, who was only temporary in the scene, weighed heavily on Luke's mind, making him feel even more dejected.
As the group gathered for dinner, Sean easily captured Shelby's attention, filling the air with laughter while Luke sulked in the background. Despite Luke's attempts, he struggled to evoke the same joy in Shelby, largely overshadowed by Sean's charisma and humor. In this social setting, Sean effectively outshone Luke, leaving Luke feeling increasingly sidelined.