What is it? (Garden Edition)

This spring, a new plant appeared in our garden. 

The flowers are about 2 inches long. 

It moved in on top of some coral bells. (I hope I can separate them next spring!)

The plant on the left is a toad lily from Rolling Green Nursery that I added to the garden last fall. I wonder if seeds for my new garden volunteer hitchhiked on that toad lily somehow.

 If you know what this plant is, please let me know in the comments or via email!!! Thank you!!!