Surrender's Edge

Geoffrey Kirk has been in love with his best friend, Nash, since almost the moment they met. Convinced that Nash would never return his feelings, he forced himself to move on, and fell for his assistant, Sunny. Despite his strong feelings, he never acted on them, and when he discovered Sunny and Nash together, he thought he lost his chance for happiness forever.

Until Sunny and Nash make it clear that he hasn't lost anything...and he still has a great deal to gain...