No, all Clematis are perennials.

Did your friend mean herbaceous clematis? These die down in winter but the root is perennial and the plant will return the next year.

After reading a little + looking on the vine forum I found out this plant is a potato vine, [invasive] It doesn't bloom lovely pink flowers like I was told but has these Potato looking things. The leaves are very pretty, glossy and heart shape. It was a good learning experiance for me. Ha Ha Happy gardening Paula