Photo from vecteezy.com.
This photo shows a romantic dinner setting, complete with candles, fairy lights, and flowers, all next to a window with a scenic view. I find this lighting romantic because the sun is setting, giving the sky many soft colors. There is no harsh overhead lighting, rather the indoor setting is lit by the warm candles and fairy lights. The shadows the light casts on the material of the table cloth and chairs also make the scene very cozy and welcoming.
be more specific in your attribution of the source.