anal advise

Me and my fiancé want to try anal. We've tried before and it just hurts so much no matter how much lubrication we use. We've tried building it up but it just hurts so much. I really want to try it, and I know he really wants to aswell but he doesn't want to hurt me?? Last time we tried it I was drunk and cried from the pain he does have a big dick which doesn't help when it's your arse hole😂