I always think its interesting that people move in together than one party begins complaining about the other and wants to change them. He is what he is just as you are what you are. The whole purpose of dating is to get to know someone, good habits and bad, and decide then if this is the person worth spending your life with. If his slobbiness is a deal breaker for you then you both need to move on because there is no changing him.
My suggestion, if to you he is worth keeping, then just get into the habit of picking up after him and doing the cleaning. Unfair, yes, but this is what you chose. Accept it or move on.
Suggestion: read Dr. Laura's book "Care and Feeding of Husbands". Assigning chores, you know will do nothing. Treating him like a little boy (which obviously he likes and acts that way), and being his mommy and telling him what to do will get old fast. Move on, find an adult male, know what you want and make sure he meets that criteria before moving in with him. It's not worth the nagging and anger every day 'cause he is really not what you want.
PS: Since you started out as roommates you should have known beforehand he was a slob. So why complain about it now???



