I made the mistake of not getting dd’s passport sorted for a holiday and so we couldn’t go. We went somewhere in this country and my partner crashed his car. He says i should pay half the damage as it was my fault we were there for not checking the passport. My argument is where ever he was, it is nobody else’s responsibility but his how he drives and he has equal responsibility to me to check whether a passport is in date or not. He says because I booked the holiday and I wanted to go that it was my responsibility to check the passport.