One Starry Night by Laurel Bird

Carlie's boyfriend has just dumped her...for another woman. Broken hearted, she sets out on a road trip to lick her wounds and winds up at a lonely hilltop just before dark. Once there, however, she meets an equally broken-hearted man who is setting his telescope to look at the stars...They two engage in conversation and before long they realize that the phrase "star-crossed lovers" was created for a reason...