The Downside to Forever by Jillian Liota

Busy Mitchell is moving home to give her daughter a better life. That means accepting help, and she’s never been good at leaning on anyone. Especially not her handsome neighbor, who she had a crush on as a kid. One smile from him and all those pre-teen feelings come rushing back.
Reid Cohen prefers a quiet life of working in his shop and hiking with his dog. He tries not to get too attached to anyone, and definitely doesn’t have space in his life to fall in love again. But when he begins spending time with the beautiful woman next door, his heart says otherwise.
Instead of acting on their mutual attraction, Reid and Busy settle into a friendship they didn’t know they needed. Casual dinners at home, short hikes into the mountains, swimming in the lake…every day is wonderful when you’re spending time with someone you care about.
But true love is once in a lifetime, and despite their best efforts, the two fall hard and fast. When Busy finds out that Reid is harboring a painful secret, she’ll need to prove her love can weather any storm, and that the depth of what they share will last forever.