I'm struggling to get my head around something but have a feeling that it's unfair.
13 years ago DH and his sister bought a flat together. It was £120,000 and they didn't have any money. Their parents paid the deposit. DH and SIL paid the mortgage equally for 2 years. After 2 years SIL wanted to move out. DH wanted to stay but couldn't afford to buy out SIL.
The parents have SIL £60,000 on DHs behalf as her share of the flat. So that was 11 years ago. Yesterday DH sold the flat (for exact same as he paid which was £120,000)
His parents thinks he owes them £60,000 as they bought out his sister for him all those years ago. This seems unfair to me but I can't quite put my finger on why. I think it's because SIL didn't put any money into the purchase (neither of them did) but was gifted £60k after living there 2 years. DH serviced the mortgage for all that time, 13 years and has come away having to pay his parents £60k whereas SIL has that amount in her pocket. DH obviously has £60k in his pocket too from the other half of the flat but he paid into it for all those years so it's not really a bonus it's just what he put in. Sils £60k is pure profit
Can someone see clearly for me is this fair? Happy to pay it if it's fair. Their parents are extremely keen for both children to have been treated equally.