My Whole Half Life (2014)

After her husband leaves her, Franziska has to travel to her cousin's wedding in Ireland on her own. When she gets hold of a magical book with a cover that changes every so often, she is convinced that she must reunite another split up couple before she herself can be happily reunited with her husband. However, when she has managed to bring Adam and his ex-girlfriend back together, it becomes clear that for herself true love can be found where she did not expect it.