So my boyfriend and I have been dating for almost  4 years now and we've been talking about marriage more and more. He's brought me to look at engagement rings twice now. My sister and her fiancé have been together 3 years and will be married in 4 months and they already share everything. They have a joint account, a truck that's in both their names. I brought up this whole joint account thing with my boyfriend more than once and he is very adimit about never having one. He said we will never have one and that's that. My money will be my money and his money his money. I'm  frustrated and honestly very confused because he won't give me a reason as to why not. I mean if we're gonna be married and eventually have kids, shouldn't we share our money too? I'm not with him for his money I could care less. I just need advice cuz it's eating me alive inside. Do  all married couples have joint accounts or is it more common not too..