There may be an innocent explanation for these lines in the book which speculate about Sri Aurobindo's romantic dramas

“In the imaginary world of his dramas, his protagonist was never without a partner.” “If his earlier plays suggest that he was searching for his ideal life partner, Vasavadutta seems to hint that he had found the woman he was seeking and was waiting for the moment she would join him.”

In Letters of Yoga, Transformation Mind, Page 1281-1282

I don't quite know about the novel. People bring in the relations of man and woman because it has been the habit for centuries to make every novel turn around that – except in the few which deal with history or adventure or similar things. In a novel based on spiritual philosophy should not the man and woman idea go into the background or disappear, the spiritual love not having anything based at all on sex, but on the relation between soul and soul?