I went out and looked this morning and mine is not blooming. It is a cutting from my sister that I put in the pot and it is total shade. When you posted the plant I remembered my sister still had her plant.
It was one my Mom grew for years and she kept her cutting. The darn thing looks horrible because she has it in her dining room window and never take it outside. I think it is in the same pot and soil for the last 20 yrs.
Maybe I should put it in some sun next summer.