Hi, my ex husband and I separated in October 2017 after many unhappy years and Relate not helping. We have two kids now aged 17&20. My husband refused to accept I was leaving him and refused to move out so I did. My son works with his Dad so as I work away a lot it made sense to leave him in family home. My daughter is at Uni. I have paid him maintenance and pay my son money directly as well as pay for both kids mobiles. My ex now has house on market and it's a 50/50 split even though he earns 50% more than me. He is now saying I should be paying towards the mortgage? He earns quite a lot more and he is only paying interest off not capital so pays less than I do for rent. I have moved away to be closer to work so my son doesn't stay every week. I don't think o should be paying to mortgage if I am already paying maintenance plus a lot more for kids?