It wasn't really his fault, technically, he never really had one. Yeah, he was thirty years old and he had never had an actual girlfriend. He obviously had his priorities in order. In all honesty, he didn't think he ever would have a healthy relationship. He had his share of women, but nothing important, and it was something he had gotten so used to that the wanting for more was forced deep down into the pit of his heart, topped with the painful effort to keep it there.
Then Izzie came along. His first attraction to her was obviously physical, because the woman was, in every sense of the word, gorgeous. And she was cool, she had no problem having a hands on only relationship, until he started to crave more and, apparently, she did to. The difference this time, however, was that Izzie opened her mouth, she pushed Dean into a position that he had never been in before, the position to want to actually try and make this work, and that scared the shit out of him. She didn't know a lot about him, and a part of him hated that, but the bigger part of him wanted to keep it that way. Whenever someone heard about what he did and who he was, they couldn't wait to send him on his way, and although he found himself having more faith in Izzie than he did in a lot of other people, there was always that fear that he wouldn't be accepted. She came from a world where doctors fixed things and everything ran... normally. He came from a world where monsters were real, and sometimes, he had to be one of them.
He pulled up in front of the building and she immediately walked out, having obviously been waiting for him. He reached over and pushed the passenger door open for her, waiting for her to climb in before he shifted the car into drive. All of that, right now, was unimportant. What was important was taking her away from here.