NICK POV
He can not help as turmoil starts to ignite within his heart. He used to live for this kind of excitement and adrenaline of what being a navy seal brings to the table but ever since you have come into his life, he can not help but only want to be with you.
Nothing else seems to be important anymore and being with you is the ultimate rush. As he watches you slowly disappearing from his view, he can not but help feel depressed. His dad always taught him to be a manly man and a man does not cry.
So, now he sits with an internal struggle of who he is supposed to be. How can he be a man and also cry? But he can not help feeling like he wants to kill someone but because of the extreme sadness. To leave you behind feels like he wants to tear his heart out of his chest and remember the pain of it.