Hello Larry
There are so many! And it's late & hard to think, but here's two love stories of the "unrequited" variety by Vikram Seth that I really enjoyed:
A Suitable Boy
An Equal Music.
Why? Well, I liked the depth of understanding I gained about the main characters in both stories. I became very involved all all sorts of aspects of their lives. I also like the strong sense of PLACE in his writing. (I'll include The Golden Gate here, too.).
I wanted both these novels to end differently, but not to be!