Serendipity, by Louise Shaffer

I read this in a couple of days. It's not earth-shattering, but it had a couple of elements I find really appealing. First, some chapters are present-day, while some are flashbacks. I usually like that kind of time-shifting. Also, the setting for many of the flashbacks is Broadway in the '60s, which gives it a retro-glam sheen. It won't change your life, but it would be a good beach read.