Anyone else in this situation ? 😭😪

So me & my fiancé have had a few ups & downs here lately , he’s an addict & he sometimes has slip ups & uses .. he tells me every time that he’s sorry & it won’t happen again but it does .. he says he loves me & wants to marry me & this & that ... but im kinda tired of dealing with this situation . I LOVE HIM TO DEATH , don’t get me wrong . What should I do ?! 😪😭