Nothing Special (R6 Frost x Male Reader)

Y/N is a lonely man. If you ask him, he'll tell you he's lived a crappy life. His father was a drunk who'd go out every night to the bar and come back wasted. This left Y/N the man of the house considering there was no mother figure in the family. He did everything from chores to daily meals and even taking care of his younger sister. Once out of high school he enlisted in the US Army 82nd Airborne as a 11B. Although he didn't like the thought of leaving his sister it was for the best. He needed to make money for his family and to him this was the best way. Only a few months into his career he was deployed to Afghanistan. Three intense years into his career he was given the chance to try out for Delta Force selection. In Delta he'd spend the next nine years going on over two hundred combat missions. As terrorism seemed to fade out in the Middle East, a wave of it washed over America. So the once infamous Team Rainbow was reactivated. Having lost a few operators in the past they went to recruiting. Y/N was one of the few. There at Rainbow he'd help defeat the White Masks. After what seemed like a year of fighting the White Masks were eliminated. During his time in Rainbow though, he met a certain woman. Her name was Tina. Everyone wasn't surprised about their relationship, Y/N was a sweet and kind, as was Tina. Everyone on team Rainbow loved her, she was extremely easy to get along with and work with. Once they had finished with the terrorist organization they celebrated with a party. Everyone drank. To his disbelief he found his girlfriend kissing another guy. He broke up with her on the spot. After that it was as if he was a totally different person. By the time he was out of Rainbow he retired from the military and went back to his hometown. There he joined his local Law Enforcement. He'd spend two years enjoying his job and even adopting a nine year old girl. What'll happen once he's back? Will his once amazing relationship rekindle?