Fighting Fire Series by Bella Young

He never expected to meet her like this. After an embarrassing high school incident involving fire and the girl he likes, Jax Crestwood decides to become a firefighter. He runs into his old crush while responding to a call at a burning restaurant. Despite the reemergence of past anxieties, that's one flame he won't be able to extinguish.

Nobody said breaking the rules would be easy. Joey DeStefano falls for his fellow fireman's sister, Bethany. The unwritten code of brotherhood at the firehouse states they can't date each other's sisters. He's reluctant to break the rule, but when her life is in danger all bets are off.

They never intended for this to happen. A string of fires puts the city of Chicago on high alert. Fireman Harper Matthews faces increasing danger as he battles the flames and his personal demons. Is there more to these fires than meets the eye?