Smackie is right. This guy isn't confused, that's just a cover up. No guy out there would say it to your face that all he wanted was just sex and nothing serious. He just came up with that lie of being confused, so you wouldn't feel bad or embarrassed.
If i was you, i wouldn't be that naive, but would just ignore him and move on ( Stop contacting him ). Hopefully you will meet with someone more responsible who wants something serious.