One night, Leonel ran into Alexis at a fancy event.

She danced a couple of times with her new guy, and then left the ballroom with him, hand in hand. As she walked away in that stunning red dress, Leonel felt a sharp pang in his chest. But he just stood in the corner, watching in silence.

His stomach churned.

He knew he had to let her go but he couldn't help obsessing over her every move. He kept tabs on her dates, where they went, and what they did.

He even tracked their hotel stays.