The Rebound Rescue by Jo Grafford

After a bad breakup, former bodybuilding champion Jett Channing decides to go on a girlfriend diet. So when his normal responsibilities as a forest ranger are interrupted to rescue a stranded hiker, he jumps at the chance to work off his wounded pride by doing something so meaningful and worthwhile.
Gwyneth Moore can’t believe her T.V. celebrity boyfriend of three years is dumping her for an anemic-looking supermodel. Too crushed to return to her job as a university research scientist, she decides to take the afternoon off to study a rare breed of flowers at the Sam Houston National Park.
When she slips down a steep incline and becomes trapped on a narrow ledge, she is stunned speechless to discover the super-hot Jett Channing is the one who’s been sent to her rescue. Maybe it’s her dehydration and exposure to the elements taking over, but Gwyneth finds herself crushing on the swoon-worthy ranger who’s literally trying to talk her off the ledge in a daring rescue attempt. And it’s way too bad he’s not looking for a new girlfriend, because that’s exactly the vacancy she wants to fill if she survives her fall!