too fast

ever since the very first time I've had sex with my husband he has always come really fast just when I feel like I'm about to cum he comes but at first when we were first dating he used to try to make me cum now it's kinda rare for him to try to make me cum. I love him and when he does fuck me it's amazing. any tips for making him last longer? we tried going slow but it eventually makes him cum fast too. with my ex we would go at it for hours! not trying to compare but I guess I would like to do that with my husband too. any advice is welcomed.