be nicer to my boyfriend

we have been together 6years, living together 1 year and getting married 28th june next year. We have had blazing rows in this first year, they never seem to get resolved, just put them away for another day when we get fed up.He is incredibly loving towards me, affectionate and i know he adores me with all his heart, but he is also incredibly lazy around the house, i am like his mother cleaning up after him because that’s what he’s used to!!
He is my best friend, as most partners are. We love spending time together, we have (mostly) the same interests. But his laziness extends to sex and i think its making me resent him, i can’t switch this irritation off, the slightest thing gets me going!
I love him, i really really do but i also want him to buck up his ideas and help me!!