I loved this audio book, it was lovely, hah! 
I personally love to read letters an this was celebrities reading letters of note on the topic of love! It was beautiful, sad, heart warming and emotional. 
The audio book really brought it to life, I really loved the last two letters as they were live recordings from the royal albert Hall and it had some lovely audience feedback as a little bonus the audio book ended with nick cave singing Love Letter live. 
My favourite letter was penned by Frida Kahlo, I think it was really brought to life by Louise Bearley who read it so well, and Frida was furious, and so heartbroken and it love, it spoke to me.