Confused 😕 relationship problems

Me and my partner have two kids together he knows I have always wanted three kids but he says he is done he doesn't won't anymore so we talked about it I see his side of things but he doesn't understand why I wont another kid!! we had our frist kid when we where 18 and now we are 25 he has came so far growing up quickly to be a dad full time job proving for his family!! but I do every think for kids the house and for him!! he knows I can handle another kid but all he looks out is time for him self which he gets every day he come home has a shower, has somethink to eat, plays computer, then if he wonts to he will spends about 30mins with the kids then they go to bed then he dose what ever he wonts to!! while I am cleaning up, washing ect , the list gose on then finally I stop we spend a bit together then off to bed!!! Urggg we are getting married this week and I thought we where on the same page!!! last night he made it clear he doesn't want any more!! so I am lost he tells me this three days before we are ment to get married, I am so confused can anyone help me what should I do how can I talk to him about this without him getting up set!! we need be on the same page it make feel like my decision or opinioning doesn't matter!! As he is done!! With having more kids!!