This is known as Jacobinia or Jacobina Carnea, and is a tropical plant. It comes in a variety of colors of white, light pink, dark pink, peach, yellow, and orange. It loves full sun, and thrives on water to grow. Around my neck of the woods, I can only see this fantastic flower at the Conservatory.
At our local Conservatory, this plant comes with pink flowers, which includes deeper and lighter pink color. I am not sure if it bloomed year round, but every time I visited, Jacobinia Carnea was always flowering.