I bought this plant/small tree from a very small nursery specializing in Succulent and Cactus. I absolutely love it, but have no idea what it is.
The leaves almost look like a squash or melon (in fact, that's all that came up when I tried using a Plant Identification App!), it's definitely not.
I've had it for about 3-4 yrs, it's never had any flowers, buds, pods, seeds, or fruit, it just looks like this year round. It's about 3ft from the soil line to the top.