Rose and Dimitri were a given from the start, that much was obvious. I never thought about Adrian and Sydney until the Bloodlines series started, and he showed up. A relationship kind of sparked from there and all you could possibly think was, "There going to be together." I'm really looking forward to the next book coming out in November. :3 The VA series is my favorite series ever, and I've read it more times than you can count.
Actually, it's time to read it again. XD