Dick had married his first real girlfriend (Liu didn't count on the grounds of being an evil sociopathic bitch, as it happened) when he was twenty, but that was one of the differences between him and Carrie. She was afraid of being that much to someone, and he wanted nothing more.
"Did you assume we were going to break up at some point? That you'd get tired of me, or I of you, and we'd go our separate ways?" They'd only had one or two real fights in their relationship, the kind that meant more than Dick torturing Carrie when she was hung over or Carrie pasting his modeling photos all over everything he owned. They... they worked. "I don't think you did, otherwise--not to put too fine a point on it--you wouldn't have proposed."