Background: Separated from partner of 10 years in January. 1ds. I've been the higher earner. I owned house and paid all bills including childcare and paid for holidays spending money etc. He sometimes contributed but was often in/out of jobs (his choice and also due to temping). When he left he asked for £1k to get him going. He's not paid child mainteneance. He moved in with new gf after a couple of months.
I'm now selling house (too big for 2) am reducing mortgage but will need some of proceeds to do up new house.
Ex has now requested money so he can have money to hand for ds "just in case".
It's not loads compared to sale price of house but I'm pissed off given he contributed little or nothing to this. He says he did lots of DIY (so did i).
He did zero childcare and only a little domestic eg some dinners.
I just begrudge giving him the money which I know will be wasted whereas everything I have will go to ds and his welfare now and in future.
Aibu? He says if it was the other way round he would have done the same. He also said if it went to court he could get more as we were together for a number of years I said unlikely as we were not married.