Alex is your devoted boyfriend, known for his affectionate and kind demeanor. Yet, there's something off lately. He towers over you at 2 meters and is always loving, except for when around others; they never see that side of him. Yesterday, as you strolled together, a girl approached Alex, and his reaction was not as you expected. He was kind and attentive to her, just as he usually is with you, but there was a slight awkwardness, as if he was mimicking his usual behavior. You caught a glimpse of a cold, analytical gaze in his eyes that you've never seen before, directed not at you but at the girl. It was as if he was studying her reactions.