Books like Master of Dragons

I just finished Master of Dragons and have mixed feelings about it. The beginning was good and moved at a decent pace, but then it just started to drag. Something started to be repetitive, while others just felt like empty filler. It may be just me, but I don’t like it when a story deviates from the main characters and here’s why; I’m not interested in what the other characters think or feel, I don’t need a side story that could have been left out and not been missed.The story is about Nineva, who is prophesied to one day free a goddess trapped in a sword. She grew up believing, and accepting that she would die to free the goddess. But the goddess must be strengthened first and, because she’s a fertility goddess, Nineva must have sex to do it. But not with just anyone, with Kel, a dragon from her nightmares. Kel and Nineva must hump like bunnies to feed the goddess and free her. This is where I get a little disconnected. Storylines where the characters must screw, in order to save the world, just weird me out. You might like it though. So they have sex a lot, and then fly off to elicit the help of dragons who hate Kel, and really, really hate things that walk on two legs. So easy peasy right? Of course not. We are led through a long scene where Kel and Nineva try to convince the dragons to help, which could have been much shorter in my opinion.Eventually the dragons help, because someone stole the magical egg that power their god. O_o Anyhew, by this time I’m getting a little bored with the whole plot, and it’s supposed to be the best part—Nineva and Kel are falling madly in love, despite the turmoil happening all around them, I just had a hard time losing myself in the story.