"If eternal return is the heaviest of burdens, then our lives can stand out against it in all their splendid lightness. But is heaviness truly deplorable and lightness splendid?"

This sentence reminds me of that in the movie, and only Tereza seems to think that love is heavy in the film. Tomas, Sabina, the professor, and the engineer...they can separate sex and love. I know that I cannot judge whether these two attitudes towards love are wrong or correct. However, I think it is unfair to Tereza in the movie, which makes Tereza looks like a weird person. I first think this a portrayal technique that shows how precious Tereza's love is. The director maybe wants to explain heavy is precious. In the end, Tomas and Tereza died in heavy love. Thomas chose to accept the "heavy" in life for Teresa, thus accepting fate's arrangement and letting them drift away until death.