Beginner Gardening: What kind of plant is this???, 1 by crb001

crb001 wrote:
When we bought our house 2 years ago, the previous owner left this plant behind. I have never seen any other like it. Once a year, they stem these little squares that blossom out into star shaped flowers in clusters. The leaves have indentations and look similar to the outside of a pea pod. I am just learning about plants. Can someone please help me identify it so that I can nuture it accordingly? I have a few more pics if needed.

Thank you!