I must admit I find it kinda weird that couples, especially married couples, have a his money/her money thing. I understand that everyone is different, so I am not judging here at all, but it's not something that I have had experience with myself.

DH and I got a joint account not long after we were engaged and started living together. Initially we talked about it and agreed that for any largish purchases (even a pair of shoes) we would check with the other and we worked out a budget for all the essentials. It was a little nervewracking at first sharing money like that but it's just like second nature these days. We both generally have an idea of how much money is in our account or 'left over' for that particular fortnight and spend money on 'extras' accordingly.