Kerria japonica, Euonymus americanus, Leycesteria formosa are shrubs with green bark. I also wonder about Dicentra spectabilis 'Alba', which flowers in spring. Is the flower formation similar to your plant? http://awaytogarden.com/wp-content/uploads/2008/05/white-dicentra.jpg Was this plant evergreen through winter, or did it die to the ground in winter ? Here is a link that might be useful:

Does anyone know when the flowers will start blooming? I at first thought it might be a nettle plant

Oops, there goes another rubber...oops there goes...another rubber tree plant! In addition to the identification, let's try to get you some help, which has been short in supply from the above posters--no real fault of theirs, it's an ID thread. Yeah, it looks like a bit more light might be helpful. Not too much, rubber trees are really capable of tolerating low light, and you don't want to suddenly shock it, but bring it up to some brighter light, then brighter again. It should improve. They do like bright light, but not direct sun. My mother kept one alive in deep shade and barely indirect light, but...well, that plant wasn't what I'd call happy. Most of them are a bit more hoggy for soil space than a cup, so that cup won't do for long, and I don't think that has a bottom drain in it either? You'll want a nice, light well-draining mix of soil with a drain at the bottom. They hate sitting in water, so a drainless cup is a bad idea. Here's two great articles for you to start with that'll help you out: https://www.apartmenttherapy.com/rubber-plant-our-best-tips-for-growing-and-care-237390 https://www.gardeningknowhow.com/houseplants/rubber-tree/how-to-care-for-a-rubber-tree-plant.htm The second is more basic, but I like the first. :-) Although they can get fifty feet tall, you may certainly prune the thing regularly to limit height. My mother's? It never needed that as it never lived long enough. :-) I hope that helps past just the simple ID.

I think it might be a peace lily, but I've not seen the split in the leaves before! Hopefully someone else can confirm.