The Hot Brother by Alexa Davis

Logan Hargrave is trying to help an organization that works to save parks and wildlife by photographing the damage loggers are doing. When he stumbles upon an injured doe and helps it, meeting Heidi, a park ranger.
When Logan comes across what he believes to be illegal activity he turns to Heidi for help. He falls for her hard, but they both have pasts that could keep them apart. Can they make it work?