Someone else may have already mentioned it, but The Soul Stone War has awesome romances, and even the slow burn ones show progress and aren’t dragged out:
Also, The Shadow Society has good romances:
A work in progress that has excellent romances is Supernatural in New York (this shapes up to be one of the best!):
And, as others said, Guinevere and Fallen Hero.
If you want some suggestions for non-CoG games (both Visual Novels and html based games through Twine) with awesome romance, I can send you a PM if you’re interested.
