Here's another round up of other interactive fiction titles. There are more at part 1 and part 2.
Maureen McGowan's Twisted Tales are fractured YA fairy tale romances. 3 layers of choices, 8 endings.
Liz Crowe has an erotic romance series called Brewing Passions. She came out with one of them as a choose your own romance.
The Adventures of Whatley Tupper by Pitts and Kerkhoven. Not really romance, with 37 endings it's geared for cyoa fans more than anything else. Authors have another book, not a sequel.
Holliday's High Noon Honeymoon (Happily Ever Afters) by A. Porter It's got a shit cover and the opening chapter is straight historical western cheese (and nothing wrong with that). Not sure why he had to advertise the Christian.
Christian teen romance where I'm sure you're punished for every risky decision:
Nicole O'Dell Scenarios
One of my fav authors who writes in the awesome futuristic urban fantasy series Crimson City and for the short-lived Shomi line, Liz Maverick, has a YA-geared title in an intriguing "active fiction for Kindle" imprint. To be a series.
Another title in this same mode is by Heidi Kling.
This one is more suspensey. Kira Snyder.
And Tawna Fensky purports to write the next installment based on reader data of which choices were most popular. Adding a serial to cyoa MYSTERY is going to be crazy hard. It's getting more attention than the other 3.
Travis Sentell seems to go in a more scifi direction.
Here's an indie erotic-romance that isn't character-centric. I'm not sure how this works, but apparently you answer a survey first and then they give you the story that matched your preferences... clearly trying to go toward the Choice Of... crowd, I'm not sure how they'd work this technology in an ebook and I'm going to try it!