How can you tell someone that they are a slob with out hurting their feelings ?

My boyfriend is turning into a slob. Yesterday we went out to lunch and he dropped some sauce on his coat and licked it off. He never washed his hands. Smh. it's more than that, he doesn't even washes his hair or like to take shower a whole lot because he doesn't like moisture. WTH? And he complains about everyone not liking him! He use to dress nice but now...it's just really slobby. I don't want to hurt his feeling so ANY IDEAS ? Help !
How can you tell someone that they are a slob with out hurting their feelings ?
Post Opinion