I'll try to keep this succinct.
Me and DP have a joint account and our own.
We normally spend around £100 on each other at Xmas but I'm low on funds so I suggested he transfer me £100 so I could buy his presents instead of him buying me anything. That way he is not out of pocket and he still gets presents which he deserves as he's not the one who hasn't budgeted very well (to be fair, I've had some unexpected costs).
However, I then realised we are in a lot of credit in our energy account as we pay more than we use (even in winter). I suggested we take out £200.
I couldn't then work out how to make the situation fair once again. Am I right in thinking he needs to take the £200?
Why can't I work this out?!!! (Blaming illness and peri menopause but I've always just been bad at maths-be gentle).