Cancer woman doesn' t understand relationship with Pisces Man. What are we doing?

I've been once in a relationship with a Pisces man 7 years my junior. He thought I was younger than him...during that time he became infatuated with me. I confessed my age when he suddenly asked to be my boyfriend, after hanging out as part of a group for several months. He was shocked, but didn't back off immediately. He did so in less than one year though. He wanted 2-3 children...of his own.