Help with advice

I have a home game in which i play with this one guy in a HU tourney and so far we r dead even after 24 games. i dont understand how to adjust to his style. I know i am better but he is a calling station and doesnt fold 4th pair when it clearly looks like he's beat when i try to buy the pot after being aggressive even PF. and he slowplays all his big hands and i have a somewhat read on him but the fact that he calls with anything and slowplays all his big hands confuses me on what he really does have. am i better off playin many small pots unless i am way ahead and try to widdle away at him? when he calls me down he says i just didnt feel u had any of it. but i think he puts this feeling into his head to justify calling when he has very little but still a pair because there are clearly times when i am buying the pot and he doesnt call or raise because he has nothing.