Aita for wanting to get married after 12 years of being together

I (31f) met my now bf (33m) when I was 20 things started fast as I got pregnant within the first year of being together. Life happened when wee had our 3rd child together he popped the question when he was on the hospital bed (inflamed gull bladder) I thought it was a joke at first because it wasnt even a real proposal. More of the lines of we should get married. I just sluffed it off. Not long after that I found out he was talking to multiple women. I don't know what was said as everything was deleted. 5 women that I know of. Anyways fast forward to last year 2025 we had our 4th son. He left me alone to have him he was at a golf tournament. And didnt make it till after the surgery was done. Then a week after he went to his brother's wedding and didnt come back for the weekend. Then things just went down hill we had an ugly 6 months after our sons birth. We broke up for about a week. In that week I heard more from him emotionally than I have the last 12 years we have been together. He apparently knew where he was going wrong he wanted to marry me. I told him to message the women he had on the sideline instead of me. I told him if he does 2 sessions of therapy we will talk about it. I would actually listen and try work on it from my side. He only did one session and he made me think that he actually changed. Now that hes back things are kind of okay. Its just every time I bring up marriage he gets mad. Offensive. He brings up money. How we cant afford it. I get that but im not asking for a 10000$ wedding. I just want to be able to walk down the aisle and just marry him. What brought this up is i thought we made a compromise. Where we get matching tattoos. I found the artist and the prices and I brought it up to him. Now hes asking questions like what are we getting?? Where are we getting it?? Which made me feel like hes not even into me. I don't want to wait another 10 years just to be left behind. I just want to know that I am who he wants to be with. Idk I might be over reacting but at the same time I just feel like I wasted the last 10 years thinking id eventually be his wife. Now I just feel so stupid for letting him come back when he didnt even do what I asked. Aita for wanting to be married.