Weve been together for awhile now. He has a child from a previous relationship. I found out that he wanted kids with his ex. She had 2 miscarriages and got lucky on the 3rd try. Right after she had the baby she left him for another guy. We met shortly after that had happened

Fast forward about a year: weve been seeing each other for a year. He tells me that his kid was planned with her but they didnt want people to know so they let everyone think it was a surprise and that he always planned on having more kids with her. Since she left him that was out of the picture. He then proceeded to tell me he didnt want anymore kids. I was unsure about what i wanted and we werent very serious at the time so i didnt let that bug me.

Fast forward another year: we are still seeing each other. I wanted to make the relationship official he didnt want to. He said that me sleeping at his house everynight should be enough of a commitment. Mind you he hid me from his ex this entire time. He never had me go to any family or friend functions. We would just hang out in his room.

Fast forward to year 3: he makes our relationship official and 3 months later asks me to marry him (no ring). I thought it was a joke as he was leaving for vegas that day. So i brushed it off. He comes back asking if i had an answer. I told him that we needed to talk about things before i would answer. Things meaning having more kids. I told him i wanted one for sure. He said ok to that. So now weve been engaged 2 years(my choice to wait to get married). It doesnt seem like he wants to even try for a kid. I found out it will be hard for me to conceive and that we should start trying soon but he wants me on birth control.

I am confused he tells me he wants to have a kid/kids with me but doesnt try. He wanted a kid with his ex and he made that happen so why is he not trying with me. I have asked why he doesnt want to try and i never really get an answer it just ends up in an argument about something completely unrelated.