Maybe Once, Maybe Twice by Alison Rose Greenberg

 Maggie Vine is a song writer and singer. On her 35th birthday her long time crush and friend Garrett Scholl kisses her. It's like magic and fireworks all bundled into one. Many years ago Maggie made a vow to Garrett (and Asher Reyes) that on her 35th birthday if she is still single they will get married. Maggie wrongly assume this is Garrett's way of binding the vow but Garrett is engaged! 

Asher Reyes was Maggie's first boyfriend and first love. They met as teens but haven't talked in decades but that's all about to change when Maggie finds out that Asher has obtained the rights to her favorite novel. When it comes to Asher and Maggie sparks are blazing but Maggie can't stop thinking about Garrett.

Maybe Once, Maybe Twice is told in alternating timelines It shows the good and bad choices characters make and how complicated relationships can be. It had me thinking what if .... but the constant songs pulled me out of the book as I found them distracting and unnecessary. This doesn't meant that I didn't enjoy the book because I did but the song lyrics weren't for me.